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Finding the Fourth Proportional to 5,871.30, 8,828.55 and 4,920.90

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Solution

The fourth proportional to 5,871.30, 8,828.55 and 4,920.90 is: 7,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.30 : 8,828.55 = 4,920.90 : x
  2. Step 2: Convert to fraction form
    5,871.30/8,828.55 = 4,920.90/x
  3. Step 3: Cross multiply
    5,871.30x = 8,828.55 × 4,920.90
  4. Step 4: Simplify right side
    5,871.30x = 43,444,411.70
  5. Step 5: Solve for x
    x = 43,444,411.70/5,871.30
  6. Step 6: Final answer
    x = 7,399.45

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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.