Home / 5,039.28-6,981.12-4,918.32

Finding the Fourth Proportional to 5,039.28, 6,981.12 and 4,918.32

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Solution

The fourth proportional to 5,039.28, 6,981.12 and 4,918.32 is: 6,813.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,039.28 : 6,981.12 = 4,918.32 : x
  2. Step 2: Convert to fraction form
    5,039.28/6,981.12 = 4,918.32/x
  3. Step 3: Cross multiply
    5,039.28x = 6,981.12 × 4,918.32
  4. Step 4: Simplify right side
    5,039.28x = 34,335,382.12
  5. Step 5: Solve for x
    x = 34,335,382.12/5,039.28
  6. Step 6: Final answer
    x = 6,813.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.