Home / 9,347.36-12,899.15-5,155.61

Finding the Fourth Proportional to 9,347.36, 12,899.15 and 5,155.61

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Solution

The fourth proportional to 9,347.36, 12,899.15 and 5,155.61 is: 7,114.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347.36 : 12,899.15 = 5,155.61 : x
  2. Step 2: Convert to fraction form
    9,347.36/12,899.15 = 5,155.61/x
  3. Step 3: Cross multiply
    9,347.36x = 12,899.15 × 5,155.61
  4. Step 4: Simplify right side
    9,347.36x = 66,502,896.46
  5. Step 5: Solve for x
    x = 66,502,896.46/9,347.36
  6. Step 6: Final answer
    x = 7,114.62

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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.