Home / 1,515.28-2,090.60-894.16

Finding the Fourth Proportional to 1,515.28, 2,090.60 and 894.16

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Solution

The fourth proportional to 1,515.28, 2,090.60 and 894.16 is: 1,233.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.28 : 2,090.60 = 894.16 : x
  2. Step 2: Convert to fraction form
    1,515.28/2,090.60 = 894.16/x
  3. Step 3: Cross multiply
    1,515.28x = 2,090.60 × 894.16
  4. Step 4: Simplify right side
    1,515.28x = 1,869,330.90
  5. Step 5: Solve for x
    x = 1,869,330.90/1,515.28
  6. Step 6: Final answer
    x = 1,233.65

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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.