Home / 1,858.40-2,787.56-609.18

Finding the Fourth Proportional to 1,858.40, 2,787.56 and 609.18

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Solution

The fourth proportional to 1,858.40, 2,787.56 and 609.18 is: 913.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.40 : 2,787.56 = 609.18 : x
  2. Step 2: Convert to fraction form
    1,858.40/2,787.56 = 609.18/x
  3. Step 3: Cross multiply
    1,858.40x = 2,787.56 × 609.18
  4. Step 4: Simplify right side
    1,858.40x = 1,698,125.80
  5. Step 5: Solve for x
    x = 1,698,125.80/1,858.40
  6. Step 6: Final answer
    x = 913.76

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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.