Home / 2,921.17-4,378.28-1,686.02

Finding the Fourth Proportional to 2,921.17, 4,378.28 and 1,686.02

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Solution

The fourth proportional to 2,921.17, 4,378.28 and 1,686.02 is: 2,527.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.17 : 4,378.28 = 1,686.02 : x
  2. Step 2: Convert to fraction form
    2,921.17/4,378.28 = 1,686.02/x
  3. Step 3: Cross multiply
    2,921.17x = 4,378.28 × 1,686.02
  4. Step 4: Simplify right side
    2,921.17x = 7,381,867.65
  5. Step 5: Solve for x
    x = 7,381,867.65/2,921.17
  6. Step 6: Final answer
    x = 2,527.03

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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.