Home / 5,221.62-7,870.59-4,920.30

Finding the Fourth Proportional to 5,221.62, 7,870.59 and 4,920.30

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Solution

The fourth proportional to 5,221.62, 7,870.59 and 4,920.30 is: 7,416.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.62 : 7,870.59 = 4,920.30 : x
  2. Step 2: Convert to fraction form
    5,221.62/7,870.59 = 4,920.30/x
  3. Step 3: Cross multiply
    5,221.62x = 7,870.59 × 4,920.30
  4. Step 4: Simplify right side
    5,221.62x = 38,725,663.98
  5. Step 5: Solve for x
    x = 38,725,663.98/5,221.62
  6. Step 6: Final answer
    x = 7,416.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.