Home / 2,581.90-3,870.51-1,657.72

Finding the Fourth Proportional to 2,581.90, 3,870.51 and 1,657.72

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Solution

The fourth proportional to 2,581.90, 3,870.51 and 1,657.72 is: 2,485.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.90 : 3,870.51 = 1,657.72 : x
  2. Step 2: Convert to fraction form
    2,581.90/3,870.51 = 1,657.72/x
  3. Step 3: Cross multiply
    2,581.90x = 3,870.51 × 1,657.72
  4. Step 4: Simplify right side
    2,581.90x = 6,416,221.84
  5. Step 5: Solve for x
    x = 6,416,221.84/2,581.90
  6. Step 6: Final answer
    x = 2,485.08

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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.