Home / 1,858.42-2,788.05-625.80

Finding the Fourth Proportional to 1,858.42, 2,788.05 and 625.80

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Solution

The fourth proportional to 1,858.42, 2,788.05 and 625.80 is: 938.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.42 : 2,788.05 = 625.80 : x
  2. Step 2: Convert to fraction form
    1,858.42/2,788.05 = 625.80/x
  3. Step 3: Cross multiply
    1,858.42x = 2,788.05 × 625.80
  4. Step 4: Simplify right side
    1,858.42x = 1,744,747.75
  5. Step 5: Solve for x
    x = 1,744,747.75/1,858.42
  6. Step 6: Final answer
    x = 938.84

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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.