Home / 2,647.60-3,977.50-1,869.40

Finding the Fourth Proportional to 2,647.60, 3,977.50 and 1,869.40

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Solution

The fourth proportional to 2,647.60, 3,977.50 and 1,869.40 is: 2,808.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.60 : 3,977.50 = 1,869.40 : x
  2. Step 2: Convert to fraction form
    2,647.60/3,977.50 = 1,869.40/x
  3. Step 3: Cross multiply
    2,647.60x = 3,977.50 × 1,869.40
  4. Step 4: Simplify right side
    2,647.60x = 7,435,538.50
  5. Step 5: Solve for x
    x = 7,435,538.50/2,647.60
  6. Step 6: Final answer
    x = 2,808.41

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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.