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Finding the Fourth Proportional to 4,312, 6,471.04 and 1,715.55

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Solution

The fourth proportional to 4,312, 6,471.04 and 1,715.55 is: 2,574.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312 : 6,471.04 = 1,715.55 : x
  2. Step 2: Convert to fraction form
    4,312/6,471.04 = 1,715.55/x
  3. Step 3: Cross multiply
    4,312x = 6,471.04 × 1,715.55
  4. Step 4: Simplify right side
    4,312x = 11,101,392.67
  5. Step 5: Solve for x
    x = 11,101,392.67/4,312
  6. Step 6: Final answer
    x = 2,574.53

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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.