Home / 2,478.82-3,421.02-1,430.95

Finding the Fourth Proportional to 2,478.82, 3,421.02 and 1,430.95

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Solution

The fourth proportional to 2,478.82, 3,421.02 and 1,430.95 is: 1,974.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.82 : 3,421.02 = 1,430.95 : x
  2. Step 2: Convert to fraction form
    2,478.82/3,421.02 = 1,430.95/x
  3. Step 3: Cross multiply
    2,478.82x = 3,421.02 × 1,430.95
  4. Step 4: Simplify right side
    2,478.82x = 4,895,308.57
  5. Step 5: Solve for x
    x = 4,895,308.57/2,478.82
  6. Step 6: Final answer
    x = 1,974.85

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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.