Home / 9,159.06-12,639.51-5,180.09

Finding the Fourth Proportional to 9,159.06, 12,639.51 and 5,180.09

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Solution

The fourth proportional to 9,159.06, 12,639.51 and 5,180.09 is: 7,148.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.06 : 12,639.51 = 5,180.09 : x
  2. Step 2: Convert to fraction form
    9,159.06/12,639.51 = 5,180.09/x
  3. Step 3: Cross multiply
    9,159.06x = 12,639.51 × 5,180.09
  4. Step 4: Simplify right side
    9,159.06x = 65,473,799.36
  5. Step 5: Solve for x
    x = 65,473,799.36/9,159.06
  6. Step 6: Final answer
    x = 7,148.53

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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.