Home / 2,505.80-3,456.70-1,915.32

Finding the Fourth Proportional to 2,505.80, 3,456.70 and 1,915.32

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Solution

The fourth proportional to 2,505.80, 3,456.70 and 1,915.32 is: 2,642.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.80 : 3,456.70 = 1,915.32 : x
  2. Step 2: Convert to fraction form
    2,505.80/3,456.70 = 1,915.32/x
  3. Step 3: Cross multiply
    2,505.80x = 3,456.70 × 1,915.32
  4. Step 4: Simplify right side
    2,505.80x = 6,620,686.64
  5. Step 5: Solve for x
    x = 6,620,686.64/2,505.80
  6. Step 6: Final answer
    x = 2,642.14

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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.