Home / 2,543.23-3,509.78-1,424.09

Finding the Fourth Proportional to 2,543.23, 3,509.78 and 1,424.09

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Solution

The fourth proportional to 2,543.23, 3,509.78 and 1,424.09 is: 1,965.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.23 : 3,509.78 = 1,424.09 : x
  2. Step 2: Convert to fraction form
    2,543.23/3,509.78 = 1,424.09/x
  3. Step 3: Cross multiply
    2,543.23x = 3,509.78 × 1,424.09
  4. Step 4: Simplify right side
    2,543.23x = 4,998,254.93
  5. Step 5: Solve for x
    x = 4,998,254.93/2,543.23
  6. Step 6: Final answer
    x = 1,965.32

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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.