Home / 1,541.18-2,126.78-877.98

Finding the Fourth Proportional to 1,541.18, 2,126.78 and 877.98

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Solution

The fourth proportional to 1,541.18, 2,126.78 and 877.98 is: 1,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.18 : 2,126.78 = 877.98 : x
  2. Step 2: Convert to fraction form
    1,541.18/2,126.78 = 877.98/x
  3. Step 3: Cross multiply
    1,541.18x = 2,126.78 × 877.98
  4. Step 4: Simplify right side
    1,541.18x = 1,867,270.30
  5. Step 5: Solve for x
    x = 1,867,270.30/1,541.18
  6. Step 6: Final answer
    x = 1,211.58

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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.