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Finding the Fourth Proportional to 8,955, 12,359.52 and 5,180.58

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Solution

The fourth proportional to 8,955, 12,359.52 and 5,180.58 is: 7,150.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955 : 12,359.52 = 5,180.58 : x
  2. Step 2: Convert to fraction form
    8,955/12,359.52 = 5,180.58/x
  3. Step 3: Cross multiply
    8,955x = 12,359.52 × 5,180.58
  4. Step 4: Simplify right side
    8,955x = 64,029,482.12
  5. Step 5: Solve for x
    x = 64,029,482.12/8,955
  6. Step 6: Final answer
    x = 7,150.14

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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.