Home / 4,920.72-7,378.80-1,457.04

Finding the Fourth Proportional to 4,920.72, 7,378.80 and 1,457.04

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Solution

The fourth proportional to 4,920.72, 7,378.80 and 1,457.04 is: 2,184.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.72 : 7,378.80 = 1,457.04 : x
  2. Step 2: Convert to fraction form
    4,920.72/7,378.80 = 1,457.04/x
  3. Step 3: Cross multiply
    4,920.72x = 7,378.80 × 1,457.04
  4. Step 4: Simplify right side
    4,920.72x = 10,751,206.75
  5. Step 5: Solve for x
    x = 10,751,206.75/4,920.72
  6. Step 6: Final answer
    x = 2,184.88

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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.