Home / 2,870.87-3,961.53-1,612.13

Finding the Fourth Proportional to 2,870.87, 3,961.53 and 1,612.13

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Solution

The fourth proportional to 2,870.87, 3,961.53 and 1,612.13 is: 2,224.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.87 : 3,961.53 = 1,612.13 : x
  2. Step 2: Convert to fraction form
    2,870.87/3,961.53 = 1,612.13/x
  3. Step 3: Cross multiply
    2,870.87x = 3,961.53 × 1,612.13
  4. Step 4: Simplify right side
    2,870.87x = 6,386,481.55
  5. Step 5: Solve for x
    x = 6,386,481.55/2,870.87
  6. Step 6: Final answer
    x = 2,224.58

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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.