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Finding the Fourth Proportional to 2,974.59, 4,461.54 and 783.49

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Solution

The fourth proportional to 2,974.59, 4,461.54 and 783.49 is: 1,175.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.59 : 4,461.54 = 783.49 : x
  2. Step 2: Convert to fraction form
    2,974.59/4,461.54 = 783.49/x
  3. Step 3: Cross multiply
    2,974.59x = 4,461.54 × 783.49
  4. Step 4: Simplify right side
    2,974.59x = 3,495,545.75
  5. Step 5: Solve for x
    x = 3,495,545.75/2,974.59
  6. Step 6: Final answer
    x = 1,175.14

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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.