Home / 7,107.45-9,807.48-4,122.18

Finding the Fourth Proportional to 7,107.45, 9,807.48 and 4,122.18

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Solution

The fourth proportional to 7,107.45, 9,807.48 and 4,122.18 is: 5,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.45 : 9,807.48 = 4,122.18 : x
  2. Step 2: Convert to fraction form
    7,107.45/9,807.48 = 4,122.18/x
  3. Step 3: Cross multiply
    7,107.45x = 9,807.48 × 4,122.18
  4. Step 4: Simplify right side
    7,107.45x = 40,428,197.91
  5. Step 5: Solve for x
    x = 40,428,197.91/7,107.45
  6. Step 6: Final answer
    x = 5,688.14

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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.