Home / 5,118.79-7,678.15-4,423.34

Finding the Fourth Proportional to 5,118.79, 7,678.15 and 4,423.34

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Solution

The fourth proportional to 5,118.79, 7,678.15 and 4,423.34 is: 6,634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.79 : 7,678.15 = 4,423.34 : x
  2. Step 2: Convert to fraction form
    5,118.79/7,678.15 = 4,423.34/x
  3. Step 3: Cross multiply
    5,118.79x = 7,678.15 × 4,423.34
  4. Step 4: Simplify right side
    5,118.79x = 33,963,068.02
  5. Step 5: Solve for x
    x = 33,963,068.02/5,118.79
  6. Step 6: Final answer
    x = 6,634.98

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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.