Home / 7,281.72-10,040.81-4,919.76

Finding the Fourth Proportional to 7,281.72, 10,040.81 and 4,919.76

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Solution

The fourth proportional to 7,281.72, 10,040.81 and 4,919.76 is: 6,783.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.72 : 10,040.81 = 4,919.76 : x
  2. Step 2: Convert to fraction form
    7,281.72/10,040.81 = 4,919.76/x
  3. Step 3: Cross multiply
    7,281.72x = 10,040.81 × 4,919.76
  4. Step 4: Simplify right side
    7,281.72x = 49,398,350.81
  5. Step 5: Solve for x
    x = 49,398,350.81/7,281.72
  6. Step 6: Final answer
    x = 6,783.88

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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.