Home / 2,472.40-3,407.70-1,937.80

Finding the Fourth Proportional to 2,472.40, 3,407.70 and 1,937.80

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Solution

The fourth proportional to 2,472.40, 3,407.70 and 1,937.80 is: 2,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,472.40 : 3,407.70 = 1,937.80 : x
  2. Step 2: Convert to fraction form
    2,472.40/3,407.70 = 1,937.80/x
  3. Step 3: Cross multiply
    2,472.40x = 3,407.70 × 1,937.80
  4. Step 4: Simplify right side
    2,472.40x = 6,603,441.06
  5. Step 5: Solve for x
    x = 6,603,441.06/2,472.40
  6. Step 6: Final answer
    x = 2,670.86

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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.