Home / 8,531.12-12,811.32-5,263.52

Finding the Fourth Proportional to 8,531.12, 12,811.32 and 5,263.52

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Solution

The fourth proportional to 8,531.12, 12,811.32 and 5,263.52 is: 7,904.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.12 : 12,811.32 = 5,263.52 : x
  2. Step 2: Convert to fraction form
    8,531.12/12,811.32 = 5,263.52/x
  3. Step 3: Cross multiply
    8,531.12x = 12,811.32 × 5,263.52
  4. Step 4: Simplify right side
    8,531.12x = 67,432,639.05
  5. Step 5: Solve for x
    x = 67,432,639.05/8,531.12
  6. Step 6: Final answer
    x = 7,904.31

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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.