Home / 2,149.47-2,966.02-1,205.21

Finding the Fourth Proportional to 2,149.47, 2,966.02 and 1,205.21

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Solution

The fourth proportional to 2,149.47, 2,966.02 and 1,205.21 is: 1,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.47 : 2,966.02 = 1,205.21 : x
  2. Step 2: Convert to fraction form
    2,149.47/2,966.02 = 1,205.21/x
  3. Step 3: Cross multiply
    2,149.47x = 2,966.02 × 1,205.21
  4. Step 4: Simplify right side
    2,149.47x = 3,574,681.37
  5. Step 5: Solve for x
    x = 3,574,681.37/2,149.47
  6. Step 6: Final answer
    x = 1,663.05

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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.