Home / 2,870.13-3,961.43-1,691.58

Finding the Fourth Proportional to 2,870.13, 3,961.43 and 1,691.58

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Solution

The fourth proportional to 2,870.13, 3,961.43 and 1,691.58 is: 2,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.13 : 3,961.43 = 1,691.58 : x
  2. Step 2: Convert to fraction form
    2,870.13/3,961.43 = 1,691.58/x
  3. Step 3: Cross multiply
    2,870.13x = 3,961.43 × 1,691.58
  4. Step 4: Simplify right side
    2,870.13x = 6,701,075.76
  5. Step 5: Solve for x
    x = 6,701,075.76/2,870.13
  6. Step 6: Final answer
    x = 2,334.76

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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.