Home / 7,146.12-9,860.85-4,315.17

Finding the Fourth Proportional to 7,146.12, 9,860.85 and 4,315.17

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Solution

The fourth proportional to 7,146.12, 9,860.85 and 4,315.17 is: 5,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.12 : 9,860.85 = 4,315.17 : x
  2. Step 2: Convert to fraction form
    7,146.12/9,860.85 = 4,315.17/x
  3. Step 3: Cross multiply
    7,146.12x = 9,860.85 × 4,315.17
  4. Step 4: Simplify right side
    7,146.12x = 42,551,244.09
  5. Step 5: Solve for x
    x = 42,551,244.09/7,146.12
  6. Step 6: Final answer
    x = 5,954.45

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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.