Home / 10,085.85-15,128.78-3,065.93

Finding the Fourth Proportional to 10,085.85, 15,128.78 and 3,065.93

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Solution

The fourth proportional to 10,085.85, 15,128.78 and 3,065.93 is: 4,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.85 : 15,128.78 = 3,065.93 : x
  2. Step 2: Convert to fraction form
    10,085.85/15,128.78 = 3,065.93/x
  3. Step 3: Cross multiply
    10,085.85x = 15,128.78 × 3,065.93
  4. Step 4: Simplify right side
    10,085.85x = 46,383,780.47
  5. Step 5: Solve for x
    x = 46,383,780.47/10,085.85
  6. Step 6: Final answer
    x = 4,598.90

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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.