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Finding the Fourth Proportional to 2,988.96, 4,483.48 and 1,140.92

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Solution

The fourth proportional to 2,988.96, 4,483.48 and 1,140.92 is: 1,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.96 : 4,483.48 = 1,140.92 : x
  2. Step 2: Convert to fraction form
    2,988.96/4,483.48 = 1,140.92/x
  3. Step 3: Cross multiply
    2,988.96x = 4,483.48 × 1,140.92
  4. Step 4: Simplify right side
    2,988.96x = 5,115,292.00
  5. Step 5: Solve for x
    x = 5,115,292.00/2,988.96
  6. Step 6: Final answer
    x = 1,711.40

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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.