Home / 7,122.12-9,830.43-4,097.58

Finding the Fourth Proportional to 7,122.12, 9,830.43 and 4,097.58

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Solution

The fourth proportional to 7,122.12, 9,830.43 and 4,097.58 is: 5,655.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.12 : 9,830.43 = 4,097.58 : x
  2. Step 2: Convert to fraction form
    7,122.12/9,830.43 = 4,097.58/x
  3. Step 3: Cross multiply
    7,122.12x = 9,830.43 × 4,097.58
  4. Step 4: Simplify right side
    7,122.12x = 40,281,008.18
  5. Step 5: Solve for x
    x = 40,281,008.18/7,122.12
  6. Step 6: Final answer
    x = 5,655.76

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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.