Home / 8,320.51-12,480.36-5,158.27

Finding the Fourth Proportional to 8,320.51, 12,480.36 and 5,158.27

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Solution

The fourth proportional to 8,320.51, 12,480.36 and 5,158.27 is: 7,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.51 : 12,480.36 = 5,158.27 : x
  2. Step 2: Convert to fraction form
    8,320.51/12,480.36 = 5,158.27/x
  3. Step 3: Cross multiply
    8,320.51x = 12,480.36 × 5,158.27
  4. Step 4: Simplify right side
    8,320.51x = 64,377,066.58
  5. Step 5: Solve for x
    x = 64,377,066.58/8,320.51
  6. Step 6: Final answer
    x = 7,737.15

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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.