Home / 1,812.04-2,718.60-1,328.20

Finding the Fourth Proportional to 1,812.04, 2,718.60 and 1,328.20

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Solution

The fourth proportional to 1,812.04, 2,718.60 and 1,328.20 is: 1,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.04 : 2,718.60 = 1,328.20 : x
  2. Step 2: Convert to fraction form
    1,812.04/2,718.60 = 1,328.20/x
  3. Step 3: Cross multiply
    1,812.04x = 2,718.60 × 1,328.20
  4. Step 4: Simplify right side
    1,812.04x = 3,610,844.52
  5. Step 5: Solve for x
    x = 3,610,844.52/1,812.04
  6. Step 6: Final answer
    x = 1,992.70

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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.