Home / 1,616.54-2,225.79-1,218.75

Finding the Fourth Proportional to 1,616.54, 2,225.79 and 1,218.75

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Solution

The fourth proportional to 1,616.54, 2,225.79 and 1,218.75 is: 1,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.54 : 2,225.79 = 1,218.75 : x
  2. Step 2: Convert to fraction form
    1,616.54/2,225.79 = 1,218.75/x
  3. Step 3: Cross multiply
    1,616.54x = 2,225.79 × 1,218.75
  4. Step 4: Simplify right side
    1,616.54x = 2,712,681.56
  5. Step 5: Solve for x
    x = 2,712,681.56/1,616.54
  6. Step 6: Final answer
    x = 1,678.08

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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.