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Finding the Fourth Proportional to 2,988.78, 4,478.22 and 1,525.92

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Solution

The fourth proportional to 2,988.78, 4,478.22 and 1,525.92 is: 2,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.78 : 4,478.22 = 1,525.92 : x
  2. Step 2: Convert to fraction form
    2,988.78/4,478.22 = 1,525.92/x
  3. Step 3: Cross multiply
    2,988.78x = 4,478.22 × 1,525.92
  4. Step 4: Simplify right side
    2,988.78x = 6,833,405.46
  5. Step 5: Solve for x
    x = 6,833,405.46/2,988.78
  6. Step 6: Final answer
    x = 2,286.35

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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.