Home / 2,130.28-2,939.54-1,186.02

Finding the Fourth Proportional to 2,130.28, 2,939.54 and 1,186.02

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Solution

The fourth proportional to 2,130.28, 2,939.54 and 1,186.02 is: 1,636.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.28 : 2,939.54 = 1,186.02 : x
  2. Step 2: Convert to fraction form
    2,130.28/2,939.54 = 1,186.02/x
  3. Step 3: Cross multiply
    2,130.28x = 2,939.54 × 1,186.02
  4. Step 4: Simplify right side
    2,130.28x = 3,486,353.23
  5. Step 5: Solve for x
    x = 3,486,353.23/2,130.28
  6. Step 6: Final answer
    x = 1,636.57

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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.