Home / 7,154.37-9,867.45-4,318.78

Finding the Fourth Proportional to 7,154.37, 9,867.45 and 4,318.78

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Solution

The fourth proportional to 7,154.37, 9,867.45 and 4,318.78 is: 5,956.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,154.37 : 9,867.45 = 4,318.78 : x
  2. Step 2: Convert to fraction form
    7,154.37/9,867.45 = 4,318.78/x
  3. Step 3: Cross multiply
    7,154.37x = 9,867.45 × 4,318.78
  4. Step 4: Simplify right side
    7,154.37x = 42,615,345.71
  5. Step 5: Solve for x
    x = 42,615,345.71/7,154.37
  6. Step 6: Final answer
    x = 5,956.55

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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.