Home / 5,225.40-7,838.30-1,715.87

Finding the Fourth Proportional to 5,225.40, 7,838.30 and 1,715.87

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Solution

The fourth proportional to 5,225.40, 7,838.30 and 1,715.87 is: 2,573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,225.40 : 7,838.30 = 1,715.87 : x
  2. Step 2: Convert to fraction form
    5,225.40/7,838.30 = 1,715.87/x
  3. Step 3: Cross multiply
    5,225.40x = 7,838.30 × 1,715.87
  4. Step 4: Simplify right side
    5,225.40x = 13,449,527.71
  5. Step 5: Solve for x
    x = 13,449,527.71/5,225.40
  6. Step 6: Final answer
    x = 2,573.88

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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.