Home / 7,715.17-11,572.80-1,871.83

Finding the Fourth Proportional to 7,715.17, 11,572.80 and 1,871.83

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Solution

The fourth proportional to 7,715.17, 11,572.80 and 1,871.83 is: 2,807.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.17 : 11,572.80 = 1,871.83 : x
  2. Step 2: Convert to fraction form
    7,715.17/11,572.80 = 1,871.83/x
  3. Step 3: Cross multiply
    7,715.17x = 11,572.80 × 1,871.83
  4. Step 4: Simplify right side
    7,715.17x = 21,662,314.22
  5. Step 5: Solve for x
    x = 21,662,314.22/7,715.17
  6. Step 6: Final answer
    x = 2,807.76

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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.