Home / 8,878.15-13,317.09-5,135.55

Finding the Fourth Proportional to 8,878.15, 13,317.09 and 5,135.55

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Solution

The fourth proportional to 8,878.15, 13,317.09 and 5,135.55 is: 7,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.15 : 13,317.09 = 5,135.55 : x
  2. Step 2: Convert to fraction form
    8,878.15/13,317.09 = 5,135.55/x
  3. Step 3: Cross multiply
    8,878.15x = 13,317.09 × 5,135.55
  4. Step 4: Simplify right side
    8,878.15x = 68,390,581.55
  5. Step 5: Solve for x
    x = 68,390,581.55/8,878.15
  6. Step 6: Final answer
    x = 7,703.25

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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.