Home / 7,487.10-10,331.46-4,130.10

Finding the Fourth Proportional to 7,487.10, 10,331.46 and 4,130.10

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Solution

The fourth proportional to 7,487.10, 10,331.46 and 4,130.10 is: 5,699.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.10 : 10,331.46 = 4,130.10 : x
  2. Step 2: Convert to fraction form
    7,487.10/10,331.46 = 4,130.10/x
  3. Step 3: Cross multiply
    7,487.10x = 10,331.46 × 4,130.10
  4. Step 4: Simplify right side
    7,487.10x = 42,669,962.95
  5. Step 5: Solve for x
    x = 42,669,962.95/7,487.10
  6. Step 6: Final answer
    x = 5,699.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.