Home / 8,255.51-11,390.12-5,065.53

Finding the Fourth Proportional to 8,255.51, 11,390.12 and 5,065.53

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Solution

The fourth proportional to 8,255.51, 11,390.12 and 5,065.53 is: 6,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.51 : 11,390.12 = 5,065.53 : x
  2. Step 2: Convert to fraction form
    8,255.51/11,390.12 = 5,065.53/x
  3. Step 3: Cross multiply
    8,255.51x = 11,390.12 × 5,065.53
  4. Step 4: Simplify right side
    8,255.51x = 57,696,969.24
  5. Step 5: Solve for x
    x = 57,696,969.24/8,255.51
  6. Step 6: Final answer
    x = 6,988.90

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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.