Home / 2,782.16-4,172.90-730.32

Finding the Fourth Proportional to 2,782.16, 4,172.90 and 730.32

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Solution

The fourth proportional to 2,782.16, 4,172.90 and 730.32 is: 1,095.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.16 : 4,172.90 = 730.32 : x
  2. Step 2: Convert to fraction form
    2,782.16/4,172.90 = 730.32/x
  3. Step 3: Cross multiply
    2,782.16x = 4,172.90 × 730.32
  4. Step 4: Simplify right side
    2,782.16x = 3,047,552.33
  5. Step 5: Solve for x
    x = 3,047,552.33/2,782.16
  6. Step 6: Final answer
    x = 1,095.39

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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.