Home / 9,377.90-12,939.36-5,398.28

Finding the Fourth Proportional to 9,377.90, 12,939.36 and 5,398.28

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Solution

The fourth proportional to 9,377.90, 12,939.36 and 5,398.28 is: 7,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,377.90 : 12,939.36 = 5,398.28 : x
  2. Step 2: Convert to fraction form
    9,377.90/12,939.36 = 5,398.28/x
  3. Step 3: Cross multiply
    9,377.90x = 12,939.36 × 5,398.28
  4. Step 4: Simplify right side
    9,377.90x = 69,850,288.30
  5. Step 5: Solve for x
    x = 69,850,288.30/9,377.90
  6. Step 6: Final answer
    x = 7,448.39

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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.