Home / 1,443.36-2,153.70-1,355.19

Finding the Fourth Proportional to 1,443.36, 2,153.70 and 1,355.19

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Solution

The fourth proportional to 1,443.36, 2,153.70 and 1,355.19 is: 2,022.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.36 : 2,153.70 = 1,355.19 : x
  2. Step 2: Convert to fraction form
    1,443.36/2,153.70 = 1,355.19/x
  3. Step 3: Cross multiply
    1,443.36x = 2,153.70 × 1,355.19
  4. Step 4: Simplify right side
    1,443.36x = 2,918,672.70
  5. Step 5: Solve for x
    x = 2,918,672.70/1,443.36
  6. Step 6: Final answer
    x = 2,022.14

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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.