Home / 5,641.21-7,784.52-3,123.16

Finding the Fourth Proportional to 5,641.21, 7,784.52 and 3,123.16

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Solution

The fourth proportional to 5,641.21, 7,784.52 and 3,123.16 is: 4,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.21 : 7,784.52 = 3,123.16 : x
  2. Step 2: Convert to fraction form
    5,641.21/7,784.52 = 3,123.16/x
  3. Step 3: Cross multiply
    5,641.21x = 7,784.52 × 3,123.16
  4. Step 4: Simplify right side
    5,641.21x = 24,312,301.48
  5. Step 5: Solve for x
    x = 24,312,301.48/5,641.21
  6. Step 6: Final answer
    x = 4,309.77

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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.