Home / 2,760.48-4,140.57-812.70

Finding the Fourth Proportional to 2,760.48, 4,140.57 and 812.70

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Solution

The fourth proportional to 2,760.48, 4,140.57 and 812.70 is: 1,219.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.48 : 4,140.57 = 812.70 : x
  2. Step 2: Convert to fraction form
    2,760.48/4,140.57 = 812.70/x
  3. Step 3: Cross multiply
    2,760.48x = 4,140.57 × 812.70
  4. Step 4: Simplify right side
    2,760.48x = 3,365,041.24
  5. Step 5: Solve for x
    x = 3,365,041.24/2,760.48
  6. Step 6: Final answer
    x = 1,219.01

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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.