Home / 8,812.56-13,214.64-5,115.93

Finding the Fourth Proportional to 8,812.56, 13,214.64 and 5,115.93

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Solution

The fourth proportional to 8,812.56, 13,214.64 and 5,115.93 is: 7,671.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.56 : 13,214.64 = 5,115.93 : x
  2. Step 2: Convert to fraction form
    8,812.56/13,214.64 = 5,115.93/x
  3. Step 3: Cross multiply
    8,812.56x = 13,214.64 × 5,115.93
  4. Step 4: Simplify right side
    8,812.56x = 67,605,173.22
  5. Step 5: Solve for x
    x = 67,605,173.22/8,812.56
  6. Step 6: Final answer
    x = 7,671.46

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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.