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Finding the Fourth Proportional to 8,959.05, 12,363.54 and 4,980.53

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Solution

The fourth proportional to 8,959.05, 12,363.54 and 4,980.53 is: 6,873.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.05 : 12,363.54 = 4,980.53 : x
  2. Step 2: Convert to fraction form
    8,959.05/12,363.54 = 4,980.53/x
  3. Step 3: Cross multiply
    8,959.05x = 12,363.54 × 4,980.53
  4. Step 4: Simplify right side
    8,959.05x = 61,576,956.97
  5. Step 5: Solve for x
    x = 61,576,956.97/8,959.05
  6. Step 6: Final answer
    x = 6,873.16

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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.