Home / 9,354.48-12,911.39-5,377.90

Finding the Fourth Proportional to 9,354.48, 12,911.39 and 5,377.90

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Solution

The fourth proportional to 9,354.48, 12,911.39 and 5,377.90 is: 7,422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,354.48 : 12,911.39 = 5,377.90 : x
  2. Step 2: Convert to fraction form
    9,354.48/12,911.39 = 5,377.90/x
  3. Step 3: Cross multiply
    9,354.48x = 12,911.39 × 5,377.90
  4. Step 4: Simplify right side
    9,354.48x = 69,436,164.28
  5. Step 5: Solve for x
    x = 69,436,164.28/9,354.48
  6. Step 6: Final answer
    x = 7,422.77

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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.