Home / 2,618.09-3,612.98-1,439.13

Finding the Fourth Proportional to 2,618.09, 3,612.98 and 1,439.13

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Solution

The fourth proportional to 2,618.09, 3,612.98 and 1,439.13 is: 1,986.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.09 : 3,612.98 = 1,439.13 : x
  2. Step 2: Convert to fraction form
    2,618.09/3,612.98 = 1,439.13/x
  3. Step 3: Cross multiply
    2,618.09x = 3,612.98 × 1,439.13
  4. Step 4: Simplify right side
    2,618.09x = 5,199,551.51
  5. Step 5: Solve for x
    x = 5,199,551.51/2,618.09
  6. Step 6: Final answer
    x = 1,986.01

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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.