Home / 8,939.25-12,337.38-5,403.60

Finding the Fourth Proportional to 8,939.25, 12,337.38 and 5,403.60

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Solution

The fourth proportional to 8,939.25, 12,337.38 and 5,403.60 is: 7,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.25 : 12,337.38 = 5,403.60 : x
  2. Step 2: Convert to fraction form
    8,939.25/12,337.38 = 5,403.60/x
  3. Step 3: Cross multiply
    8,939.25x = 12,337.38 × 5,403.60
  4. Step 4: Simplify right side
    8,939.25x = 66,666,266.57
  5. Step 5: Solve for x
    x = 66,666,266.57/8,939.25
  6. Step 6: Final answer
    x = 7,457.70

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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.