Home / 2,877.69-4,315.62-929.45

Finding the Fourth Proportional to 2,877.69, 4,315.62 and 929.45

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Solution

The fourth proportional to 2,877.69, 4,315.62 and 929.45 is: 1,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.69 : 4,315.62 = 929.45 : x
  2. Step 2: Convert to fraction form
    2,877.69/4,315.62 = 929.45/x
  3. Step 3: Cross multiply
    2,877.69x = 4,315.62 × 929.45
  4. Step 4: Simplify right side
    2,877.69x = 4,011,131.43
  5. Step 5: Solve for x
    x = 4,011,131.43/2,877.69
  6. Step 6: Final answer
    x = 1,393.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.