Home / 2,077.40-2,866.76-1,145.88

Finding the Fourth Proportional to 2,077.40, 2,866.76 and 1,145.88

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Solution

The fourth proportional to 2,077.40, 2,866.76 and 1,145.88 is: 1,581.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.40 : 2,866.76 = 1,145.88 : x
  2. Step 2: Convert to fraction form
    2,077.40/2,866.76 = 1,145.88/x
  3. Step 3: Cross multiply
    2,077.40x = 2,866.76 × 1,145.88
  4. Step 4: Simplify right side
    2,077.40x = 3,284,962.95
  5. Step 5: Solve for x
    x = 3,284,962.95/2,077.40
  6. Step 6: Final answer
    x = 1,581.29

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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.