Home / 1,195.32-1,643.58-1,020.36

Finding the Fourth Proportional to 1,195.32, 1,643.58 and 1,020.36

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Solution

The fourth proportional to 1,195.32, 1,643.58 and 1,020.36 is: 1,403.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.32 : 1,643.58 = 1,020.36 : x
  2. Step 2: Convert to fraction form
    1,195.32/1,643.58 = 1,020.36/x
  3. Step 3: Cross multiply
    1,195.32x = 1,643.58 × 1,020.36
  4. Step 4: Simplify right side
    1,195.32x = 1,677,043.29
  5. Step 5: Solve for x
    x = 1,677,043.29/1,195.32
  6. Step 6: Final answer
    x = 1,403.01

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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.