Home / 1,416.80-2,133.32-1,330.40

Finding the Fourth Proportional to 1,416.80, 2,133.32 and 1,330.40

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Solution

The fourth proportional to 1,416.80, 2,133.32 and 1,330.40 is: 2,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.80 : 2,133.32 = 1,330.40 : x
  2. Step 2: Convert to fraction form
    1,416.80/2,133.32 = 1,330.40/x
  3. Step 3: Cross multiply
    1,416.80x = 2,133.32 × 1,330.40
  4. Step 4: Simplify right side
    1,416.80x = 2,838,168.93
  5. Step 5: Solve for x
    x = 2,838,168.93/1,416.80
  6. Step 6: Final answer
    x = 2,003.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.