Home / 1,977.02-2,727.90-1,191.12

Finding the Fourth Proportional to 1,977.02, 2,727.90 and 1,191.12

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Solution

The fourth proportional to 1,977.02, 2,727.90 and 1,191.12 is: 1,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.02 : 2,727.90 = 1,191.12 : x
  2. Step 2: Convert to fraction form
    1,977.02/2,727.90 = 1,191.12/x
  3. Step 3: Cross multiply
    1,977.02x = 2,727.90 × 1,191.12
  4. Step 4: Simplify right side
    1,977.02x = 3,249,256.25
  5. Step 5: Solve for x
    x = 3,249,256.25/1,977.02
  6. Step 6: Final answer
    x = 1,643.51

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1.5x scale

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.