Home / 5,145.12-7,713.56-4,855.35

Finding the Fourth Proportional to 5,145.12, 7,713.56 and 4,855.35

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Solution

The fourth proportional to 5,145.12, 7,713.56 and 4,855.35 is: 7,279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.12 : 7,713.56 = 4,855.35 : x
  2. Step 2: Convert to fraction form
    5,145.12/7,713.56 = 4,855.35/x
  3. Step 3: Cross multiply
    5,145.12x = 7,713.56 × 4,855.35
  4. Step 4: Simplify right side
    5,145.12x = 37,452,009.27
  5. Step 5: Solve for x
    x = 37,452,009.27/5,145.12
  6. Step 6: Final answer
    x = 7,279.13

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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.