Home / 2,157.02-2,976.63-1,225.50

Finding the Fourth Proportional to 2,157.02, 2,976.63 and 1,225.50

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Solution

The fourth proportional to 2,157.02, 2,976.63 and 1,225.50 is: 1,691.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.02 : 2,976.63 = 1,225.50 : x
  2. Step 2: Convert to fraction form
    2,157.02/2,976.63 = 1,225.50/x
  3. Step 3: Cross multiply
    2,157.02x = 2,976.63 × 1,225.50
  4. Step 4: Simplify right side
    2,157.02x = 3,647,860.07
  5. Step 5: Solve for x
    x = 3,647,860.07/2,157.02
  6. Step 6: Final answer
    x = 1,691.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.