Home / 5,628.79-7,774.62-4,218.78

Finding the Fourth Proportional to 5,628.79, 7,774.62 and 4,218.78

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Solution

The fourth proportional to 5,628.79, 7,774.62 and 4,218.78 is: 5,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.79 : 7,774.62 = 4,218.78 : x
  2. Step 2: Convert to fraction form
    5,628.79/7,774.62 = 4,218.78/x
  3. Step 3: Cross multiply
    5,628.79x = 7,774.62 × 4,218.78
  4. Step 4: Simplify right side
    5,628.79x = 32,799,424.70
  5. Step 5: Solve for x
    x = 32,799,424.70/5,628.79
  6. Step 6: Final answer
    x = 5,827.08

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1.5x scale

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.