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Finding the Fourth Proportional to 7,648.84, 10,551.12 and 4,815.16

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Solution

The fourth proportional to 7,648.84, 10,551.12 and 4,815.16 is: 6,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,648.84 : 10,551.12 = 4,815.16 : x
  2. Step 2: Convert to fraction form
    7,648.84/10,551.12 = 4,815.16/x
  3. Step 3: Cross multiply
    7,648.84x = 10,551.12 × 4,815.16
  4. Step 4: Simplify right side
    7,648.84x = 50,805,330.98
  5. Step 5: Solve for x
    x = 50,805,330.98/7,648.84
  6. Step 6: Final answer
    x = 6,642.23

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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.