Home / 2,870.16-3,961.45-1,691.91

Finding the Fourth Proportional to 2,870.16, 3,961.45 and 1,691.91

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Solution

The fourth proportional to 2,870.16, 3,961.45 and 1,691.91 is: 2,335.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.16 : 3,961.45 = 1,691.91 : x
  2. Step 2: Convert to fraction form
    2,870.16/3,961.45 = 1,691.91/x
  3. Step 3: Cross multiply
    2,870.16x = 3,961.45 × 1,691.91
  4. Step 4: Simplify right side
    2,870.16x = 6,702,412.64
  5. Step 5: Solve for x
    x = 6,702,412.64/2,870.16
  6. Step 6: Final answer
    x = 2,335.21

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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.