Home / 1,540.17-2,125.31-877.01

Finding the Fourth Proportional to 1,540.17, 2,125.31 and 877.01

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Solution

The fourth proportional to 1,540.17, 2,125.31 and 877.01 is: 1,210.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.17 : 2,125.31 = 877.01 : x
  2. Step 2: Convert to fraction form
    1,540.17/2,125.31 = 877.01/x
  3. Step 3: Cross multiply
    1,540.17x = 2,125.31 × 877.01
  4. Step 4: Simplify right side
    1,540.17x = 1,863,903.11
  5. Step 5: Solve for x
    x = 1,863,903.11/1,540.17
  6. Step 6: Final answer
    x = 1,210.19

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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.