Home / 2,261.57-3,121.06-1,421.95

Finding the Fourth Proportional to 2,261.57, 3,121.06 and 1,421.95

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Solution

The fourth proportional to 2,261.57, 3,121.06 and 1,421.95 is: 1,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.57 : 3,121.06 = 1,421.95 : x
  2. Step 2: Convert to fraction form
    2,261.57/3,121.06 = 1,421.95/x
  3. Step 3: Cross multiply
    2,261.57x = 3,121.06 × 1,421.95
  4. Step 4: Simplify right side
    2,261.57x = 4,437,979.91
  5. Step 5: Solve for x
    x = 4,437,979.91/2,261.57
  6. Step 6: Final answer
    x = 1,962.35

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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.