Home / 4,779.21-7,159.22-2,178.57

Finding the Fourth Proportional to 4,779.21, 7,159.22 and 2,178.57

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Solution

The fourth proportional to 4,779.21, 7,159.22 and 2,178.57 is: 3,263.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.21 : 7,159.22 = 2,178.57 : x
  2. Step 2: Convert to fraction form
    4,779.21/7,159.22 = 2,178.57/x
  3. Step 3: Cross multiply
    4,779.21x = 7,159.22 × 2,178.57
  4. Step 4: Simplify right side
    4,779.21x = 15,596,851.02
  5. Step 5: Solve for x
    x = 15,596,851.02/4,779.21
  6. Step 6: Final answer
    x = 3,263.48

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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.