Home / 7,712.90-10,643.78-4,176.12

Finding the Fourth Proportional to 7,712.90, 10,643.78 and 4,176.12

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Solution

The fourth proportional to 7,712.90, 10,643.78 and 4,176.12 is: 5,763.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.90 : 10,643.78 = 4,176.12 : x
  2. Step 2: Convert to fraction form
    7,712.90/10,643.78 = 4,176.12/x
  3. Step 3: Cross multiply
    7,712.90x = 10,643.78 × 4,176.12
  4. Step 4: Simplify right side
    7,712.90x = 44,449,702.53
  5. Step 5: Solve for x
    x = 44,449,702.53/7,712.90
  6. Step 6: Final answer
    x = 5,763.03

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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.