Home / 5,085.40-7,622.88-1,963.48

Finding the Fourth Proportional to 5,085.40, 7,622.88 and 1,963.48

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Solution

The fourth proportional to 5,085.40, 7,622.88 and 1,963.48 is: 2,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.40 : 7,622.88 = 1,963.48 : x
  2. Step 2: Convert to fraction form
    5,085.40/7,622.88 = 1,963.48/x
  3. Step 3: Cross multiply
    5,085.40x = 7,622.88 × 1,963.48
  4. Step 4: Simplify right side
    5,085.40x = 14,967,372.42
  5. Step 5: Solve for x
    x = 14,967,372.42/5,085.40
  6. Step 6: Final answer
    x = 2,943.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.