Home / 8,923.77-12,315.38-5,147.91

Finding the Fourth Proportional to 8,923.77, 12,315.38 and 5,147.91

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Solution

The fourth proportional to 8,923.77, 12,315.38 and 5,147.91 is: 7,104.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,923.77 : 12,315.38 = 5,147.91 : x
  2. Step 2: Convert to fraction form
    8,923.77/12,315.38 = 5,147.91/x
  3. Step 3: Cross multiply
    8,923.77x = 12,315.38 × 5,147.91
  4. Step 4: Simplify right side
    8,923.77x = 63,398,442.12
  5. Step 5: Solve for x
    x = 63,398,442.12/8,923.77
  6. Step 6: Final answer
    x = 7,104.45

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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.