Home / 7,351.28-10,145.22-4,207.40

Finding the Fourth Proportional to 7,351.28, 10,145.22 and 4,207.40

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Solution

The fourth proportional to 7,351.28, 10,145.22 and 4,207.40 is: 5,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.28 : 10,145.22 = 4,207.40 : x
  2. Step 2: Convert to fraction form
    7,351.28/10,145.22 = 4,207.40/x
  3. Step 3: Cross multiply
    7,351.28x = 10,145.22 × 4,207.40
  4. Step 4: Simplify right side
    7,351.28x = 42,684,998.63
  5. Step 5: Solve for x
    x = 42,684,998.63/7,351.28
  6. Step 6: Final answer
    x = 5,806.47

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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.