Home / 7,715.36-10,647.14-4,178.49

Finding the Fourth Proportional to 7,715.36, 10,647.14 and 4,178.49

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Solution

The fourth proportional to 7,715.36, 10,647.14 and 4,178.49 is: 5,766.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.36 : 10,647.14 = 4,178.49 : x
  2. Step 2: Convert to fraction form
    7,715.36/10,647.14 = 4,178.49/x
  3. Step 3: Cross multiply
    7,715.36x = 10,647.14 × 4,178.49
  4. Step 4: Simplify right side
    7,715.36x = 44,488,947.13
  5. Step 5: Solve for x
    x = 44,488,947.13/7,715.36
  6. Step 6: Final answer
    x = 5,766.29

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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.