Home / 7,974.78-11,004.02-4,787.40

Finding the Fourth Proportional to 7,974.78, 11,004.02 and 4,787.40

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Solution

The fourth proportional to 7,974.78, 11,004.02 and 4,787.40 is: 6,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.78 : 11,004.02 = 4,787.40 : x
  2. Step 2: Convert to fraction form
    7,974.78/11,004.02 = 4,787.40/x
  3. Step 3: Cross multiply
    7,974.78x = 11,004.02 × 4,787.40
  4. Step 4: Simplify right side
    7,974.78x = 52,680,645.35
  5. Step 5: Solve for x
    x = 52,680,645.35/7,974.78
  6. Step 6: Final answer
    x = 6,605.91

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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.