Home / 9,004.28-12,420.70-5,416.76

Finding the Fourth Proportional to 9,004.28, 12,420.70 and 5,416.76

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Solution

The fourth proportional to 9,004.28, 12,420.70 and 5,416.76 is: 7,472.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,004.28 : 12,420.70 = 5,416.76 : x
  2. Step 2: Convert to fraction form
    9,004.28/12,420.70 = 5,416.76/x
  3. Step 3: Cross multiply
    9,004.28x = 12,420.70 × 5,416.76
  4. Step 4: Simplify right side
    9,004.28x = 67,279,950.93
  5. Step 5: Solve for x
    x = 67,279,950.93/9,004.28
  6. Step 6: Final answer
    x = 7,472.00

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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.