Home / 1,550.86-2,140.24-887.70

Finding the Fourth Proportional to 1,550.86, 2,140.24 and 887.70

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Solution

The fourth proportional to 1,550.86, 2,140.24 and 887.70 is: 1,225.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.86 : 2,140.24 = 887.70 : x
  2. Step 2: Convert to fraction form
    1,550.86/2,140.24 = 887.70/x
  3. Step 3: Cross multiply
    1,550.86x = 2,140.24 × 887.70
  4. Step 4: Simplify right side
    1,550.86x = 1,899,891.05
  5. Step 5: Solve for x
    x = 1,899,891.05/1,550.86
  6. Step 6: Final answer
    x = 1,225.06

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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.