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Finding the Fourth Proportional to 7,478.92, 10,320.90 and 4,335.16

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Solution

The fourth proportional to 7,478.92, 10,320.90 and 4,335.16 is: 5,982.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.92 : 10,320.90 = 4,335.16 : x
  2. Step 2: Convert to fraction form
    7,478.92/10,320.90 = 4,335.16/x
  3. Step 3: Cross multiply
    7,478.92x = 10,320.90 × 4,335.16
  4. Step 4: Simplify right side
    7,478.92x = 44,742,752.84
  5. Step 5: Solve for x
    x = 44,742,752.84/7,478.92
  6. Step 6: Final answer
    x = 5,982.52

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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.