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Finding the Fourth Proportional to 1,767.90, 2,441.16 and 1,210.20

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Solution

The fourth proportional to 1,767.90, 2,441.16 and 1,210.20 is: 1,671.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.90 : 2,441.16 = 1,210.20 : x
  2. Step 2: Convert to fraction form
    1,767.90/2,441.16 = 1,210.20/x
  3. Step 3: Cross multiply
    1,767.90x = 2,441.16 × 1,210.20
  4. Step 4: Simplify right side
    1,767.90x = 2,954,291.83
  5. Step 5: Solve for x
    x = 2,954,291.83/1,767.90
  6. Step 6: Final answer
    x = 1,671.07

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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.