Home / 1,543.42-2,128.68-1,303.30

Finding the Fourth Proportional to 1,543.42, 2,128.68 and 1,303.30

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Solution

The fourth proportional to 1,543.42, 2,128.68 and 1,303.30 is: 1,797.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.42 : 2,128.68 = 1,303.30 : x
  2. Step 2: Convert to fraction form
    1,543.42/2,128.68 = 1,303.30/x
  3. Step 3: Cross multiply
    1,543.42x = 2,128.68 × 1,303.30
  4. Step 4: Simplify right side
    1,543.42x = 2,774,308.64
  5. Step 5: Solve for x
    x = 2,774,308.64/1,543.42
  6. Step 6: Final answer
    x = 1,797.51

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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.