Home / 2,887.77-4,330.02-939.45

Finding the Fourth Proportional to 2,887.77, 4,330.02 and 939.45

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Solution

The fourth proportional to 2,887.77, 4,330.02 and 939.45 is: 1,408.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.77 : 4,330.02 = 939.45 : x
  2. Step 2: Convert to fraction form
    2,887.77/4,330.02 = 939.45/x
  3. Step 3: Cross multiply
    2,887.77x = 4,330.02 × 939.45
  4. Step 4: Simplify right side
    2,887.77x = 4,067,837.29
  5. Step 5: Solve for x
    x = 4,067,837.29/2,887.77
  6. Step 6: Final answer
    x = 1,408.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.