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Finding the Fourth Proportional to 2,929.36, 4,393.32 and 877.36

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Solution

The fourth proportional to 2,929.36, 4,393.32 and 877.36 is: 1,315.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.36 : 4,393.32 = 877.36 : x
  2. Step 2: Convert to fraction form
    2,929.36/4,393.32 = 877.36/x
  3. Step 3: Cross multiply
    2,929.36x = 4,393.32 × 877.36
  4. Step 4: Simplify right side
    2,929.36x = 3,854,523.24
  5. Step 5: Solve for x
    x = 3,854,523.24/2,929.36
  6. Step 6: Final answer
    x = 1,315.82

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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.