Home / 9,390.05-12,959.69-5,356.86

Finding the Fourth Proportional to 9,390.05, 12,959.69 and 5,356.86

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Solution

The fourth proportional to 9,390.05, 12,959.69 and 5,356.86 is: 7,393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.05 : 12,959.69 = 5,356.86 : x
  2. Step 2: Convert to fraction form
    9,390.05/12,959.69 = 5,356.86/x
  3. Step 3: Cross multiply
    9,390.05x = 12,959.69 × 5,356.86
  4. Step 4: Simplify right side
    9,390.05x = 69,423,244.97
  5. Step 5: Solve for x
    x = 69,423,244.97/9,390.05
  6. Step 6: Final answer
    x = 7,393.28

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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.