Home / 9,376.90-12,939.70-5,397.17

Finding the Fourth Proportional to 9,376.90, 12,939.70 and 5,397.17

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Solution

The fourth proportional to 9,376.90, 12,939.70 and 5,397.17 is: 7,447.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,376.90 : 12,939.70 = 5,397.17 : x
  2. Step 2: Convert to fraction form
    9,376.90/12,939.70 = 5,397.17/x
  3. Step 3: Cross multiply
    9,376.90x = 12,939.70 × 5,397.17
  4. Step 4: Simplify right side
    9,376.90x = 69,837,692.58
  5. Step 5: Solve for x
    x = 69,837,692.58/9,376.90
  6. Step 6: Final answer
    x = 7,447.85

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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.