Home / 5,748.40-8,621.80-1,853.20

Finding the Fourth Proportional to 5,748.40, 8,621.80 and 1,853.20

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Solution

The fourth proportional to 5,748.40, 8,621.80 and 1,853.20 is: 2,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,748.40 : 8,621.80 = 1,853.20 : x
  2. Step 2: Convert to fraction form
    5,748.40/8,621.80 = 1,853.20/x
  3. Step 3: Cross multiply
    5,748.40x = 8,621.80 × 1,853.20
  4. Step 4: Simplify right side
    5,748.40x = 15,977,919.76
  5. Step 5: Solve for x
    x = 15,977,919.76/5,748.40
  6. Step 6: Final answer
    x = 2,779.54

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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.