Home / 1,430.97-1,974.56-841.29

Finding the Fourth Proportional to 1,430.97, 1,974.56 and 841.29

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Solution

The fourth proportional to 1,430.97, 1,974.56 and 841.29 is: 1,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.97 : 1,974.56 = 841.29 : x
  2. Step 2: Convert to fraction form
    1,430.97/1,974.56 = 841.29/x
  3. Step 3: Cross multiply
    1,430.97x = 1,974.56 × 841.29
  4. Step 4: Simplify right side
    1,430.97x = 1,661,173.38
  5. Step 5: Solve for x
    x = 1,661,173.38/1,430.97
  6. Step 6: Final answer
    x = 1,160.87

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Double scale
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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.