Home / 5,139.95-7,093.11-2,782.08

Finding the Fourth Proportional to 5,139.95, 7,093.11 and 2,782.08

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Solution

The fourth proportional to 5,139.95, 7,093.11 and 2,782.08 is: 3,839.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.95 : 7,093.11 = 2,782.08 : x
  2. Step 2: Convert to fraction form
    5,139.95/7,093.11 = 2,782.08/x
  3. Step 3: Cross multiply
    5,139.95x = 7,093.11 × 2,782.08
  4. Step 4: Simplify right side
    5,139.95x = 19,733,599.47
  5. Step 5: Solve for x
    x = 19,733,599.47/5,139.95
  6. Step 6: Final answer
    x = 3,839.26

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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.