Home / 5,638.60-8,457.90-3,670.30

Finding the Fourth Proportional to 5,638.60, 8,457.90 and 3,670.30

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Solution

The fourth proportional to 5,638.60, 8,457.90 and 3,670.30 is: 5,505.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.60 : 8,457.90 = 3,670.30 : x
  2. Step 2: Convert to fraction form
    5,638.60/8,457.90 = 3,670.30/x
  3. Step 3: Cross multiply
    5,638.60x = 8,457.90 × 3,670.30
  4. Step 4: Simplify right side
    5,638.60x = 31,043,030.37
  5. Step 5: Solve for x
    x = 31,043,030.37/5,638.60
  6. Step 6: Final answer
    x = 5,505.45

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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.