Home / 5,775.81-7,970.57-3,123.21

Finding the Fourth Proportional to 5,775.81, 7,970.57 and 3,123.21

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Solution

The fourth proportional to 5,775.81, 7,970.57 and 3,123.21 is: 4,310.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,775.81 : 7,970.57 = 3,123.21 : x
  2. Step 2: Convert to fraction form
    5,775.81/7,970.57 = 3,123.21/x
  3. Step 3: Cross multiply
    5,775.81x = 7,970.57 × 3,123.21
  4. Step 4: Simplify right side
    5,775.81x = 24,893,745.08
  5. Step 5: Solve for x
    x = 24,893,745.08/5,775.81
  6. Step 6: Final answer
    x = 4,310.00

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Double scale
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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.