Home / 1,541.22-2,126.60-877.82

Finding the Fourth Proportional to 1,541.22, 2,126.60 and 877.82

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Solution

The fourth proportional to 1,541.22, 2,126.60 and 877.82 is: 1,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.22 : 2,126.60 = 877.82 : x
  2. Step 2: Convert to fraction form
    1,541.22/2,126.60 = 877.82/x
  3. Step 3: Cross multiply
    1,541.22x = 2,126.60 × 877.82
  4. Step 4: Simplify right side
    1,541.22x = 1,866,772.01
  5. Step 5: Solve for x
    x = 1,866,772.01/1,541.22
  6. Step 6: Final answer
    x = 1,211.23

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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.