Home / 8,931.24-12,325.98-5,205

Finding the Fourth Proportional to 8,931.24, 12,325.98 and 5,205

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Solution

The fourth proportional to 8,931.24, 12,325.98 and 5,205 is: 7,183.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.24 : 12,325.98 = 5,205 : x
  2. Step 2: Convert to fraction form
    8,931.24/12,325.98 = 5,205/x
  3. Step 3: Cross multiply
    8,931.24x = 12,325.98 × 5,205
  4. Step 4: Simplify right side
    8,931.24x = 64,156,725.90
  5. Step 5: Solve for x
    x = 64,156,725.90/8,931.24
  6. Step 6: Final answer
    x = 7,183.41

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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.