Home / 4,814.78-7,221.56-1,528.20

Finding the Fourth Proportional to 4,814.78, 7,221.56 and 1,528.20

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Solution

The fourth proportional to 4,814.78, 7,221.56 and 1,528.20 is: 2,292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,814.78 : 7,221.56 = 1,528.20 : x
  2. Step 2: Convert to fraction form
    4,814.78/7,221.56 = 1,528.20/x
  3. Step 3: Cross multiply
    4,814.78x = 7,221.56 × 1,528.20
  4. Step 4: Simplify right side
    4,814.78x = 11,035,980.35
  5. Step 5: Solve for x
    x = 11,035,980.35/4,814.78
  6. Step 6: Final answer
    x = 2,292.11

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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.