Home / 5,486.40-8,230.90-1,788.65

Finding the Fourth Proportional to 5,486.40, 8,230.90 and 1,788.65

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Solution

The fourth proportional to 5,486.40, 8,230.90 and 1,788.65 is: 2,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.40 : 8,230.90 = 1,788.65 : x
  2. Step 2: Convert to fraction form
    5,486.40/8,230.90 = 1,788.65/x
  3. Step 3: Cross multiply
    5,486.40x = 8,230.90 × 1,788.65
  4. Step 4: Simplify right side
    5,486.40x = 14,722,199.29
  5. Step 5: Solve for x
    x = 14,722,199.29/5,486.40
  6. Step 6: Final answer
    x = 2,683.40

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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.