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Finding the Fourth Proportional to 4,779.93, 7,170.80 and 1,492.23

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Solution

The fourth proportional to 4,779.93, 7,170.80 and 1,492.23 is: 2,238.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.93 : 7,170.80 = 1,492.23 : x
  2. Step 2: Convert to fraction form
    4,779.93/7,170.80 = 1,492.23/x
  3. Step 3: Cross multiply
    4,779.93x = 7,170.80 × 1,492.23
  4. Step 4: Simplify right side
    4,779.93x = 10,700,475.42
  5. Step 5: Solve for x
    x = 10,700,475.42/4,779.93
  6. Step 6: Final answer
    x = 2,238.63

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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.