Home / 1,220.04-1,685.13-887.94

Finding the Fourth Proportional to 1,220.04, 1,685.13 and 887.94

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Solution

The fourth proportional to 1,220.04, 1,685.13 and 887.94 is: 1,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.04 : 1,685.13 = 887.94 : x
  2. Step 2: Convert to fraction form
    1,220.04/1,685.13 = 887.94/x
  3. Step 3: Cross multiply
    1,220.04x = 1,685.13 × 887.94
  4. Step 4: Simplify right side
    1,220.04x = 1,496,294.33
  5. Step 5: Solve for x
    x = 1,496,294.33/1,220.04
  6. Step 6: Final answer
    x = 1,226.43

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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.