Home / 7,345.20-10,143.53-6,276.68

Finding the Fourth Proportional to 7,345.20, 10,143.53 and 6,276.68

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Solution

The fourth proportional to 7,345.20, 10,143.53 and 6,276.68 is: 8,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.20 : 10,143.53 = 6,276.68 : x
  2. Step 2: Convert to fraction form
    7,345.20/10,143.53 = 6,276.68/x
  3. Step 3: Cross multiply
    7,345.20x = 10,143.53 × 6,276.68
  4. Step 4: Simplify right side
    7,345.20x = 63,667,691.88
  5. Step 5: Solve for x
    x = 63,667,691.88/7,345.20
  6. Step 6: Final answer
    x = 8,667.93

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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.