Home / 1,551.04-2,140.43-887.89

Finding the Fourth Proportional to 1,551.04, 2,140.43 and 887.89

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Solution

The fourth proportional to 1,551.04, 2,140.43 and 887.89 is: 1,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.04 : 2,140.43 = 887.89 : x
  2. Step 2: Convert to fraction form
    1,551.04/2,140.43 = 887.89/x
  3. Step 3: Cross multiply
    1,551.04x = 2,140.43 × 887.89
  4. Step 4: Simplify right side
    1,551.04x = 1,900,466.39
  5. Step 5: Solve for x
    x = 1,900,466.39/1,551.04
  6. Step 6: Final answer
    x = 1,225.29

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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.