Home / 5,127.68-7,074.74-2,888.78

Finding the Fourth Proportional to 5,127.68, 7,074.74 and 2,888.78

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Solution

The fourth proportional to 5,127.68, 7,074.74 and 2,888.78 is: 3,985.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.68 : 7,074.74 = 2,888.78 : x
  2. Step 2: Convert to fraction form
    5,127.68/7,074.74 = 2,888.78/x
  3. Step 3: Cross multiply
    5,127.68x = 7,074.74 × 2,888.78
  4. Step 4: Simplify right side
    5,127.68x = 20,437,317.60
  5. Step 5: Solve for x
    x = 20,437,317.60/5,127.68
  6. Step 6: Final answer
    x = 3,985.69

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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.