Home / 8,219.79-11,340.54-4,680.50

Finding the Fourth Proportional to 8,219.79, 11,340.54 and 4,680.50

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Solution

The fourth proportional to 8,219.79, 11,340.54 and 4,680.50 is: 6,457.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.79 : 11,340.54 = 4,680.50 : x
  2. Step 2: Convert to fraction form
    8,219.79/11,340.54 = 4,680.50/x
  3. Step 3: Cross multiply
    8,219.79x = 11,340.54 × 4,680.50
  4. Step 4: Simplify right side
    8,219.79x = 53,079,340.77
  5. Step 5: Solve for x
    x = 53,079,340.77/8,219.79
  6. Step 6: Final answer
    x = 6,457.51

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Half 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.