Home / 1,915.07-2,643.05-1,169.13

Finding the Fourth Proportional to 1,915.07, 2,643.05 and 1,169.13

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Solution

The fourth proportional to 1,915.07, 2,643.05 and 1,169.13 is: 1,613.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.07 : 2,643.05 = 1,169.13 : x
  2. Step 2: Convert to fraction form
    1,915.07/2,643.05 = 1,169.13/x
  3. Step 3: Cross multiply
    1,915.07x = 2,643.05 × 1,169.13
  4. Step 4: Simplify right side
    1,915.07x = 3,090,063.20
  5. Step 5: Solve for x
    x = 3,090,063.20/1,915.07
  6. Step 6: Final answer
    x = 1,613.55

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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.