Home / 1,612.18-2,419.35-625.78

Finding the Fourth Proportional to 1,612.18, 2,419.35 and 625.78

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Solution

The fourth proportional to 1,612.18, 2,419.35 and 625.78 is: 939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.18 : 2,419.35 = 625.78 : x
  2. Step 2: Convert to fraction form
    1,612.18/2,419.35 = 625.78/x
  3. Step 3: Cross multiply
    1,612.18x = 2,419.35 × 625.78
  4. Step 4: Simplify right side
    1,612.18x = 1,513,980.84
  5. Step 5: Solve for x
    x = 1,513,980.84/1,612.18
  6. Step 6: Final answer
    x = 939.09

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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.