Home / 1,897.28-2,617.21-1,543.58

Finding the Fourth Proportional to 1,897.28, 2,617.21 and 1,543.58

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Solution

The fourth proportional to 1,897.28, 2,617.21 and 1,543.58 is: 2,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.28 : 2,617.21 = 1,543.58 : x
  2. Step 2: Convert to fraction form
    1,897.28/2,617.21 = 1,543.58/x
  3. Step 3: Cross multiply
    1,897.28x = 2,617.21 × 1,543.58
  4. Step 4: Simplify right side
    1,897.28x = 4,039,873.01
  5. Step 5: Solve for x
    x = 4,039,873.01/1,897.28
  6. Step 6: Final answer
    x = 2,129.30

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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.