Home / 8,158.90-12,238.47-2,315.51

Finding the Fourth Proportional to 8,158.90, 12,238.47 and 2,315.51

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Solution

The fourth proportional to 8,158.90, 12,238.47 and 2,315.51 is: 3,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.90 : 12,238.47 = 2,315.51 : x
  2. Step 2: Convert to fraction form
    8,158.90/12,238.47 = 2,315.51/x
  3. Step 3: Cross multiply
    8,158.90x = 12,238.47 × 2,315.51
  4. Step 4: Simplify right side
    8,158.90x = 28,338,312.28
  5. Step 5: Solve for x
    x = 28,338,312.28/8,158.90
  6. Step 6: Final answer
    x = 3,473.30

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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.