Home / 5,641-7,784.39-3,123.22

Finding the Fourth Proportional to 5,641, 7,784.39 and 3,123.22

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Solution

The fourth proportional to 5,641, 7,784.39 and 3,123.22 is: 4,309.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641 : 7,784.39 = 3,123.22 : x
  2. Step 2: Convert to fraction form
    5,641/7,784.39 = 3,123.22/x
  3. Step 3: Cross multiply
    5,641x = 7,784.39 × 3,123.22
  4. Step 4: Simplify right side
    5,641x = 24,312,346.92
  5. Step 5: Solve for x
    x = 24,312,346.92/5,641
  6. Step 6: Final answer
    x = 4,309.94

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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.