Home / 1,800.45-2,483.55-1,328.20

Finding the Fourth Proportional to 1,800.45, 2,483.55 and 1,328.20

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Solution

The fourth proportional to 1,800.45, 2,483.55 and 1,328.20 is: 1,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.45 : 2,483.55 = 1,328.20 : x
  2. Step 2: Convert to fraction form
    1,800.45/2,483.55 = 1,328.20/x
  3. Step 3: Cross multiply
    1,800.45x = 2,483.55 × 1,328.20
  4. Step 4: Simplify right side
    1,800.45x = 3,298,651.11
  5. Step 5: Solve for x
    x = 3,298,651.11/1,800.45
  6. Step 6: Final answer
    x = 1,832.13

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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.