Home / 7,715.11-10,646.84-4,178.35

Finding the Fourth Proportional to 7,715.11, 10,646.84 and 4,178.35

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Solution

The fourth proportional to 7,715.11, 10,646.84 and 4,178.35 is: 5,766.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.11 : 10,646.84 = 4,178.35 : x
  2. Step 2: Convert to fraction form
    7,715.11/10,646.84 = 4,178.35/x
  3. Step 3: Cross multiply
    7,715.11x = 10,646.84 × 4,178.35
  4. Step 4: Simplify right side
    7,715.11x = 44,486,203.02
  5. Step 5: Solve for x
    x = 44,486,203.02/7,715.11
  6. Step 6: Final answer
    x = 5,766.11

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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.