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Finding the Fourth Proportional to 7,715.00, 11,572.46 and 1,871.57

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Solution

The fourth proportional to 7,715.00, 11,572.46 and 1,871.57 is: 2,807.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.00 : 11,572.46 = 1,871.57 : x
  2. Step 2: Convert to fraction form
    7,715.00/11,572.46 = 1,871.57/x
  3. Step 3: Cross multiply
    7,715.00x = 11,572.46 × 1,871.57
  4. Step 4: Simplify right side
    7,715.00x = 21,658,695.55
  5. Step 5: Solve for x
    x = 21,658,695.55/7,715.00
  6. Step 6: Final answer
    x = 2,807.35

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1.5x scale

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.