Home / 8,085.12-11,159.28-5,289

Finding the Fourth Proportional to 8,085.12, 11,159.28 and 5,289

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Solution

The fourth proportional to 8,085.12, 11,159.28 and 5,289 is: 7,300.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.12 : 11,159.28 = 5,289 : x
  2. Step 2: Convert to fraction form
    8,085.12/11,159.28 = 5,289/x
  3. Step 3: Cross multiply
    8,085.12x = 11,159.28 × 5,289
  4. Step 4: Simplify right side
    8,085.12x = 59,021,431.92
  5. Step 5: Solve for x
    x = 59,021,431.92/8,085.12
  6. Step 6: Final answer
    x = 7,300.01

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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.