Home / 8,935.19-12,331.12-5,159.05

Finding the Fourth Proportional to 8,935.19, 12,331.12 and 5,159.05

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Solution

The fourth proportional to 8,935.19, 12,331.12 and 5,159.05 is: 7,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.19 : 12,331.12 = 5,159.05 : x
  2. Step 2: Convert to fraction form
    8,935.19/12,331.12 = 5,159.05/x
  3. Step 3: Cross multiply
    8,935.19x = 12,331.12 × 5,159.05
  4. Step 4: Simplify right side
    8,935.19x = 63,616,820.91
  5. Step 5: Solve for x
    x = 63,616,820.91/8,935.19
  6. Step 6: Final answer
    x = 7,119.80

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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.