Home / 1,760.02-2,638.99-720.19

Finding the Fourth Proportional to 1,760.02, 2,638.99 and 720.19

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Solution

The fourth proportional to 1,760.02, 2,638.99 and 720.19 is: 1,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.02 : 2,638.99 = 720.19 : x
  2. Step 2: Convert to fraction form
    1,760.02/2,638.99 = 720.19/x
  3. Step 3: Cross multiply
    1,760.02x = 2,638.99 × 720.19
  4. Step 4: Simplify right side
    1,760.02x = 1,900,574.21
  5. Step 5: Solve for x
    x = 1,900,574.21/1,760.02
  6. Step 6: Final answer
    x = 1,079.86

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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.