Home / 9,715.20-13,406.58-5,737.60

Finding the Fourth Proportional to 9,715.20, 13,406.58 and 5,737.60

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Solution

The fourth proportional to 9,715.20, 13,406.58 and 5,737.60 is: 7,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,715.20 : 13,406.58 = 5,737.60 : x
  2. Step 2: Convert to fraction form
    9,715.20/13,406.58 = 5,737.60/x
  3. Step 3: Cross multiply
    9,715.20x = 13,406.58 × 5,737.60
  4. Step 4: Simplify right side
    9,715.20x = 76,921,593.41
  5. Step 5: Solve for x
    x = 76,921,593.41/9,715.20
  6. Step 6: Final answer
    x = 7,917.65

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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.