Home / 1,901.68-2,625.96-1,405.18

Finding the Fourth Proportional to 1,901.68, 2,625.96 and 1,405.18

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Solution

The fourth proportional to 1,901.68, 2,625.96 and 1,405.18 is: 1,940.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.68 : 2,625.96 = 1,405.18 : x
  2. Step 2: Convert to fraction form
    1,901.68/2,625.96 = 1,405.18/x
  3. Step 3: Cross multiply
    1,901.68x = 2,625.96 × 1,405.18
  4. Step 4: Simplify right side
    1,901.68x = 3,689,946.47
  5. Step 5: Solve for x
    x = 3,689,946.47/1,901.68
  6. Step 6: Final answer
    x = 1,940.36

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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.