Home / 8,931.76-12,318.33-5,745.58

Finding the Fourth Proportional to 8,931.76, 12,318.33 and 5,745.58

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Solution

The fourth proportional to 8,931.76, 12,318.33 and 5,745.58 is: 7,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.76 : 12,318.33 = 5,745.58 : x
  2. Step 2: Convert to fraction form
    8,931.76/12,318.33 = 5,745.58/x
  3. Step 3: Cross multiply
    8,931.76x = 12,318.33 × 5,745.58
  4. Step 4: Simplify right side
    8,931.76x = 70,775,950.48
  5. Step 5: Solve for x
    x = 70,775,950.48/8,931.76
  6. Step 6: Final answer
    x = 7,924.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.