Home / 2,115.66-2,915.76-1,740.24

Finding the Fourth Proportional to 2,115.66, 2,915.76 and 1,740.24

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Solution

The fourth proportional to 2,115.66, 2,915.76 and 1,740.24 is: 2,398.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.66 : 2,915.76 = 1,740.24 : x
  2. Step 2: Convert to fraction form
    2,115.66/2,915.76 = 1,740.24/x
  3. Step 3: Cross multiply
    2,115.66x = 2,915.76 × 1,740.24
  4. Step 4: Simplify right side
    2,115.66x = 5,074,122.18
  5. Step 5: Solve for x
    x = 5,074,122.18/2,115.66
  6. Step 6: Final answer
    x = 2,398.36

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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.