Home / 3,487.02-5,230.65-1,638.12

Finding the Fourth Proportional to 3,487.02, 5,230.65 and 1,638.12

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Solution

The fourth proportional to 3,487.02, 5,230.65 and 1,638.12 is: 2,457.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.02 : 5,230.65 = 1,638.12 : x
  2. Step 2: Convert to fraction form
    3,487.02/5,230.65 = 1,638.12/x
  3. Step 3: Cross multiply
    3,487.02x = 5,230.65 × 1,638.12
  4. Step 4: Simplify right side
    3,487.02x = 8,568,432.38
  5. Step 5: Solve for x
    x = 8,568,432.38/3,487.02
  6. Step 6: Final answer
    x = 2,457.24

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Double scale
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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.