Home / 7,118.32-9,823.13-3,931.42

Finding the Fourth Proportional to 7,118.32, 9,823.13 and 3,931.42

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Solution

The fourth proportional to 7,118.32, 9,823.13 and 3,931.42 is: 5,425.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.32 : 9,823.13 = 3,931.42 : x
  2. Step 2: Convert to fraction form
    7,118.32/9,823.13 = 3,931.42/x
  3. Step 3: Cross multiply
    7,118.32x = 9,823.13 × 3,931.42
  4. Step 4: Simplify right side
    7,118.32x = 38,618,830.09
  5. Step 5: Solve for x
    x = 38,618,830.09/7,118.32
  6. Step 6: Final answer
    x = 5,425.27

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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.