Home / 1,550.84-2,140.26-887.78

Finding the Fourth Proportional to 1,550.84, 2,140.26 and 887.78

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Solution

The fourth proportional to 1,550.84, 2,140.26 and 887.78 is: 1,225.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.84 : 2,140.26 = 887.78 : x
  2. Step 2: Convert to fraction form
    1,550.84/2,140.26 = 887.78/x
  3. Step 3: Cross multiply
    1,550.84x = 2,140.26 × 887.78
  4. Step 4: Simplify right side
    1,550.84x = 1,900,080.02
  5. Step 5: Solve for x
    x = 1,900,080.02/1,550.84
  6. Step 6: Final answer
    x = 1,225.19

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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.