Home / 4,478.76-6,720.57-2,920.32

Finding the Fourth Proportional to 4,478.76, 6,720.57 and 2,920.32

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Solution

The fourth proportional to 4,478.76, 6,720.57 and 2,920.32 is: 4,382.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.76 : 6,720.57 = 2,920.32 : x
  2. Step 2: Convert to fraction form
    4,478.76/6,720.57 = 2,920.32/x
  3. Step 3: Cross multiply
    4,478.76x = 6,720.57 × 2,920.32
  4. Step 4: Simplify right side
    4,478.76x = 19,626,214.98
  5. Step 5: Solve for x
    x = 19,626,214.98/4,478.76
  6. Step 6: Final answer
    x = 4,382.06

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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.