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Finding the Fourth Proportional to 1,411.39, 1,945.85 and 1,158.39

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Solution

The fourth proportional to 1,411.39, 1,945.85 and 1,158.39 is: 1,597.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.39 : 1,945.85 = 1,158.39 : x
  2. Step 2: Convert to fraction form
    1,411.39/1,945.85 = 1,158.39/x
  3. Step 3: Cross multiply
    1,411.39x = 1,945.85 × 1,158.39
  4. Step 4: Simplify right side
    1,411.39x = 2,254,053.18
  5. Step 5: Solve for x
    x = 2,254,053.18/1,411.39
  6. Step 6: Final answer
    x = 1,597.04

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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.