Home / 9,381.44-12,947.76-5,402.45

Finding the Fourth Proportional to 9,381.44, 12,947.76 and 5,402.45

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Solution

The fourth proportional to 9,381.44, 12,947.76 and 5,402.45 is: 7,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,381.44 : 12,947.76 = 5,402.45 : x
  2. Step 2: Convert to fraction form
    9,381.44/12,947.76 = 5,402.45/x
  3. Step 3: Cross multiply
    9,381.44x = 12,947.76 × 5,402.45
  4. Step 4: Simplify right side
    9,381.44x = 69,949,561.27
  5. Step 5: Solve for x
    x = 69,949,561.27/9,381.44
  6. Step 6: Final answer
    x = 7,456.17

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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.