Home / 1,550.38-2,140.46-1,020.10

Finding the Fourth Proportional to 1,550.38, 2,140.46 and 1,020.10

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Solution

The fourth proportional to 1,550.38, 2,140.46 and 1,020.10 is: 1,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.38 : 2,140.46 = 1,020.10 : x
  2. Step 2: Convert to fraction form
    1,550.38/2,140.46 = 1,020.10/x
  3. Step 3: Cross multiply
    1,550.38x = 2,140.46 × 1,020.10
  4. Step 4: Simplify right side
    1,550.38x = 2,183,483.25
  5. Step 5: Solve for x
    x = 2,183,483.25/1,550.38
  6. Step 6: Final answer
    x = 1,408.35

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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.