Home / 2,487.11-3,428.33-1,856.72

Finding the Fourth Proportional to 2,487.11, 3,428.33 and 1,856.72

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Solution

The fourth proportional to 2,487.11, 3,428.33 and 1,856.72 is: 2,559.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.11 : 3,428.33 = 1,856.72 : x
  2. Step 2: Convert to fraction form
    2,487.11/3,428.33 = 1,856.72/x
  3. Step 3: Cross multiply
    2,487.11x = 3,428.33 × 1,856.72
  4. Step 4: Simplify right side
    2,487.11x = 6,365,448.16
  5. Step 5: Solve for x
    x = 6,365,448.16/2,487.11
  6. Step 6: Final answer
    x = 2,559.38

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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.