Home / 1,501.13-2,072.49-1,187.66

Finding the Fourth Proportional to 1,501.13, 2,072.49 and 1,187.66

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Solution

The fourth proportional to 1,501.13, 2,072.49 and 1,187.66 is: 1,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.13 : 2,072.49 = 1,187.66 : x
  2. Step 2: Convert to fraction form
    1,501.13/2,072.49 = 1,187.66/x
  3. Step 3: Cross multiply
    1,501.13x = 2,072.49 × 1,187.66
  4. Step 4: Simplify right side
    1,501.13x = 2,461,414.20
  5. Step 5: Solve for x
    x = 2,461,414.20/1,501.13
  6. Step 6: Final answer
    x = 1,639.70

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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.