Home / 1,550.10-2,140.11-1,077.86

Finding the Fourth Proportional to 1,550.10, 2,140.11 and 1,077.86

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Solution

The fourth proportional to 1,550.10, 2,140.11 and 1,077.86 is: 1,488.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.10 : 2,140.11 = 1,077.86 : x
  2. Step 2: Convert to fraction form
    1,550.10/2,140.11 = 1,077.86/x
  3. Step 3: Cross multiply
    1,550.10x = 2,140.11 × 1,077.86
  4. Step 4: Simplify right side
    1,550.10x = 2,306,728.26
  5. Step 5: Solve for x
    x = 2,306,728.26/1,550.10
  6. Step 6: Final answer
    x = 1,488.12

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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.