Home / 7,118.57-9,823.77-3,931.85

Finding the Fourth Proportional to 7,118.57, 9,823.77 and 3,931.85

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Solution

The fourth proportional to 7,118.57, 9,823.77 and 3,931.85 is: 5,426.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.57 : 9,823.77 = 3,931.85 : x
  2. Step 2: Convert to fraction form
    7,118.57/9,823.77 = 3,931.85/x
  3. Step 3: Cross multiply
    7,118.57x = 9,823.77 × 3,931.85
  4. Step 4: Simplify right side
    7,118.57x = 38,625,590.07
  5. Step 5: Solve for x
    x = 38,625,590.07/7,118.57
  6. Step 6: Final answer
    x = 5,426.03

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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.