Home / 4,749.65-7,124.47-1,287.17

Finding the Fourth Proportional to 4,749.65, 7,124.47 and 1,287.17

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Solution

The fourth proportional to 4,749.65, 7,124.47 and 1,287.17 is: 1,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.65 : 7,124.47 = 1,287.17 : x
  2. Step 2: Convert to fraction form
    4,749.65/7,124.47 = 1,287.17/x
  3. Step 3: Cross multiply
    4,749.65x = 7,124.47 × 1,287.17
  4. Step 4: Simplify right side
    4,749.65x = 9,170,404.05
  5. Step 5: Solve for x
    x = 9,170,404.05/4,749.65
  6. Step 6: Final answer
    x = 1,930.75

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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.