Home / 7,928.84-10,941.84-5,139.20

Finding the Fourth Proportional to 7,928.84, 10,941.84 and 5,139.20

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Solution

The fourth proportional to 7,928.84, 10,941.84 and 5,139.20 is: 7,092.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.84 : 10,941.84 = 5,139.20 : x
  2. Step 2: Convert to fraction form
    7,928.84/10,941.84 = 5,139.20/x
  3. Step 3: Cross multiply
    7,928.84x = 10,941.84 × 5,139.20
  4. Step 4: Simplify right side
    7,928.84x = 56,232,304.13
  5. Step 5: Solve for x
    x = 56,232,304.13/7,928.84
  6. Step 6: Final answer
    x = 7,092.12

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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.