Home / 8,785.28-12,122.16-5,058.56

Finding the Fourth Proportional to 8,785.28, 12,122.16 and 5,058.56

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Solution

The fourth proportional to 8,785.28, 12,122.16 and 5,058.56 is: 6,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.28 : 12,122.16 = 5,058.56 : x
  2. Step 2: Convert to fraction form
    8,785.28/12,122.16 = 5,058.56/x
  3. Step 3: Cross multiply
    8,785.28x = 12,122.16 × 5,058.56
  4. Step 4: Simplify right side
    8,785.28x = 61,320,673.69
  5. Step 5: Solve for x
    x = 61,320,673.69/8,785.28
  6. Step 6: Final answer
    x = 6,979.93

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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.