Home / 5,638.18-8,457.31-1,478.15

Finding the Fourth Proportional to 5,638.18, 8,457.31 and 1,478.15

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Solution

The fourth proportional to 5,638.18, 8,457.31 and 1,478.15 is: 2,217.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.18 : 8,457.31 = 1,478.15 : x
  2. Step 2: Convert to fraction form
    5,638.18/8,457.31 = 1,478.15/x
  3. Step 3: Cross multiply
    5,638.18x = 8,457.31 × 1,478.15
  4. Step 4: Simplify right side
    5,638.18x = 12,501,207.09
  5. Step 5: Solve for x
    x = 12,501,207.09/5,638.18
  6. Step 6: Final answer
    x = 2,217.24

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.