Home / 2,877.45-4,315.25-929.21

Finding the Fourth Proportional to 2,877.45, 4,315.25 and 929.21

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Solution

The fourth proportional to 2,877.45, 4,315.25 and 929.21 is: 1,393.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.45 : 4,315.25 = 929.21 : x
  2. Step 2: Convert to fraction form
    2,877.45/4,315.25 = 929.21/x
  3. Step 3: Cross multiply
    2,877.45x = 4,315.25 × 929.21
  4. Step 4: Simplify right side
    2,877.45x = 4,009,747.23
  5. Step 5: Solve for x
    x = 4,009,747.23/2,877.45
  6. Step 6: Final answer
    x = 1,393.51

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1.5x scale

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.