Home / 8,920.40-13,376.04-5,223.68

Finding the Fourth Proportional to 8,920.40, 13,376.04 and 5,223.68

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Solution

The fourth proportional to 8,920.40, 13,376.04 and 5,223.68 is: 7,832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.40 : 13,376.04 = 5,223.68 : x
  2. Step 2: Convert to fraction form
    8,920.40/13,376.04 = 5,223.68/x
  3. Step 3: Cross multiply
    8,920.40x = 13,376.04 × 5,223.68
  4. Step 4: Simplify right side
    8,920.40x = 69,872,152.63
  5. Step 5: Solve for x
    x = 69,872,152.63/8,920.40
  6. Step 6: Final answer
    x = 7,832.85

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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.