Home / 1,448.02-2,169.30-1,218.40

Finding the Fourth Proportional to 1,448.02, 2,169.30 and 1,218.40

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Solution

The fourth proportional to 1,448.02, 2,169.30 and 1,218.40 is: 1,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.02 : 2,169.30 = 1,218.40 : x
  2. Step 2: Convert to fraction form
    1,448.02/2,169.30 = 1,218.40/x
  3. Step 3: Cross multiply
    1,448.02x = 2,169.30 × 1,218.40
  4. Step 4: Simplify right side
    1,448.02x = 2,643,075.12
  5. Step 5: Solve for x
    x = 2,643,075.12/1,448.02
  6. Step 6: Final answer
    x = 1,825.30

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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.