Home / 1,669.68-2,490.08-1,424.39

Finding the Fourth Proportional to 1,669.68, 2,490.08 and 1,424.39

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Solution

The fourth proportional to 1,669.68, 2,490.08 and 1,424.39 is: 2,124.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.68 : 2,490.08 = 1,424.39 : x
  2. Step 2: Convert to fraction form
    1,669.68/2,490.08 = 1,424.39/x
  3. Step 3: Cross multiply
    1,669.68x = 2,490.08 × 1,424.39
  4. Step 4: Simplify right side
    1,669.68x = 3,546,825.48
  5. Step 5: Solve for x
    x = 3,546,825.48/1,669.68
  6. Step 6: Final answer
    x = 2,124.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.