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Finding the Fourth Proportional to 2,948.06, 4,422.06 and 756.78

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Solution

The fourth proportional to 2,948.06, 4,422.06 and 756.78 is: 1,135.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.06 : 4,422.06 = 756.78 : x
  2. Step 2: Convert to fraction form
    2,948.06/4,422.06 = 756.78/x
  3. Step 3: Cross multiply
    2,948.06x = 4,422.06 × 756.78
  4. Step 4: Simplify right side
    2,948.06x = 3,346,526.57
  5. Step 5: Solve for x
    x = 3,346,526.57/2,948.06
  6. Step 6: Final answer
    x = 1,135.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.