Home / 2,909.48-4,013.94-1,915.24

Finding the Fourth Proportional to 2,909.48, 4,013.94 and 1,915.24

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Solution

The fourth proportional to 2,909.48, 4,013.94 and 1,915.24 is: 2,642.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.48 : 4,013.94 = 1,915.24 : x
  2. Step 2: Convert to fraction form
    2,909.48/4,013.94 = 1,915.24/x
  3. Step 3: Cross multiply
    2,909.48x = 4,013.94 × 1,915.24
  4. Step 4: Simplify right side
    2,909.48x = 7,687,658.45
  5. Step 5: Solve for x
    x = 7,687,658.45/2,909.48
  6. Step 6: Final answer
    x = 2,642.28

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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.