Home / 6,342.28-8,749.20-3,688.72

Finding the Fourth Proportional to 6,342.28, 8,749.20 and 3,688.72

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Solution

The fourth proportional to 6,342.28, 8,749.20 and 3,688.72 is: 5,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,342.28 : 8,749.20 = 3,688.72 : x
  2. Step 2: Convert to fraction form
    6,342.28/8,749.20 = 3,688.72/x
  3. Step 3: Cross multiply
    6,342.28x = 8,749.20 × 3,688.72
  4. Step 4: Simplify right side
    6,342.28x = 32,273,349.02
  5. Step 5: Solve for x
    x = 32,273,349.02/6,342.28
  6. Step 6: Final answer
    x = 5,088.60

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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.