Home / 7,715.14-10,646.91-4,178.33

Finding the Fourth Proportional to 7,715.14, 10,646.91 and 4,178.33

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Solution

The fourth proportional to 7,715.14, 10,646.91 and 4,178.33 is: 5,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.14 : 10,646.91 = 4,178.33 : x
  2. Step 2: Convert to fraction form
    7,715.14/10,646.91 = 4,178.33/x
  3. Step 3: Cross multiply
    7,715.14x = 10,646.91 × 4,178.33
  4. Step 4: Simplify right side
    7,715.14x = 44,486,303.46
  5. Step 5: Solve for x
    x = 44,486,303.46/7,715.14
  6. Step 6: Final answer
    x = 5,766.10

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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.