Home / 1,513.32-2,088.41-850.21

Finding the Fourth Proportional to 1,513.32, 2,088.41 and 850.21

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Solution

The fourth proportional to 1,513.32, 2,088.41 and 850.21 is: 1,173.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.32 : 2,088.41 = 850.21 : x
  2. Step 2: Convert to fraction form
    1,513.32/2,088.41 = 850.21/x
  3. Step 3: Cross multiply
    1,513.32x = 2,088.41 × 850.21
  4. Step 4: Simplify right side
    1,513.32x = 1,775,587.07
  5. Step 5: Solve for x
    x = 1,775,587.07/1,513.32
  6. Step 6: Final answer
    x = 1,173.31

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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.