Home / 9,351.18-12,905.55-5,159.43

Finding the Fourth Proportional to 9,351.18, 12,905.55 and 5,159.43

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Solution

The fourth proportional to 9,351.18, 12,905.55 and 5,159.43 is: 7,120.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,351.18 : 12,905.55 = 5,159.43 : x
  2. Step 2: Convert to fraction form
    9,351.18/12,905.55 = 5,159.43/x
  3. Step 3: Cross multiply
    9,351.18x = 12,905.55 × 5,159.43
  4. Step 4: Simplify right side
    9,351.18x = 66,585,281.84
  5. Step 5: Solve for x
    x = 66,585,281.84/9,351.18
  6. Step 6: Final answer
    x = 7,120.52

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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.