Home / 1,210.20-1,812.60-884.58

Finding the Fourth Proportional to 1,210.20, 1,812.60 and 884.58

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Solution

The fourth proportional to 1,210.20, 1,812.60 and 884.58 is: 1,324.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.20 : 1,812.60 = 884.58 : x
  2. Step 2: Convert to fraction form
    1,210.20/1,812.60 = 884.58/x
  3. Step 3: Cross multiply
    1,210.20x = 1,812.60 × 884.58
  4. Step 4: Simplify right side
    1,210.20x = 1,603,389.71
  5. Step 5: Solve for x
    x = 1,603,389.71/1,210.20
  6. Step 6: Final answer
    x = 1,324.90

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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.