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Finding the Fourth Proportional to 1,876.89, 2,590.22 and 1,080.47

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Solution

The fourth proportional to 1,876.89, 2,590.22 and 1,080.47 is: 1,491.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.89 : 2,590.22 = 1,080.47 : x
  2. Step 2: Convert to fraction form
    1,876.89/2,590.22 = 1,080.47/x
  3. Step 3: Cross multiply
    1,876.89x = 2,590.22 × 1,080.47
  4. Step 4: Simplify right side
    1,876.89x = 2,798,655.00
  5. Step 5: Solve for x
    x = 2,798,655.00/1,876.89
  6. Step 6: Final answer
    x = 1,491.11

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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.