Home / 1,348.45-1,862.36-1,330.21

Finding the Fourth Proportional to 1,348.45, 1,862.36 and 1,330.21

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Solution

The fourth proportional to 1,348.45, 1,862.36 and 1,330.21 is: 1,837.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.45 : 1,862.36 = 1,330.21 : x
  2. Step 2: Convert to fraction form
    1,348.45/1,862.36 = 1,330.21/x
  3. Step 3: Cross multiply
    1,348.45x = 1,862.36 × 1,330.21
  4. Step 4: Simplify right side
    1,348.45x = 2,477,329.90
  5. Step 5: Solve for x
    x = 2,477,329.90/1,348.45
  6. Step 6: Final answer
    x = 1,837.17

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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.