Home / 2,447.40-3,373.48-1,915.38

Finding the Fourth Proportional to 2,447.40, 3,373.48 and 1,915.38

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Solution

The fourth proportional to 2,447.40, 3,373.48 and 1,915.38 is: 2,640.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.40 : 3,373.48 = 1,915.38 : x
  2. Step 2: Convert to fraction form
    2,447.40/3,373.48 = 1,915.38/x
  3. Step 3: Cross multiply
    2,447.40x = 3,373.48 × 1,915.38
  4. Step 4: Simplify right side
    2,447.40x = 6,461,496.12
  5. Step 5: Solve for x
    x = 6,461,496.12/2,447.40
  6. Step 6: Final answer
    x = 2,640.15

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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.