Home / 7,475.20-10,315.78-4,118.02

Finding the Fourth Proportional to 7,475.20, 10,315.78 and 4,118.02

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Solution

The fourth proportional to 7,475.20, 10,315.78 and 4,118.02 is: 5,682.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.20 : 10,315.78 = 4,118.02 : x
  2. Step 2: Convert to fraction form
    7,475.20/10,315.78 = 4,118.02/x
  3. Step 3: Cross multiply
    7,475.20x = 10,315.78 × 4,118.02
  4. Step 4: Simplify right side
    7,475.20x = 42,480,588.36
  5. Step 5: Solve for x
    x = 42,480,588.36/7,475.20
  6. Step 6: Final answer
    x = 5,682.87

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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.