Home / 2,887.02-4,330.15-939.07

Finding the Fourth Proportional to 2,887.02, 4,330.15 and 939.07

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Solution

The fourth proportional to 2,887.02, 4,330.15 and 939.07 is: 1,408.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.02 : 4,330.15 = 939.07 : x
  2. Step 2: Convert to fraction form
    2,887.02/4,330.15 = 939.07/x
  3. Step 3: Cross multiply
    2,887.02x = 4,330.15 × 939.07
  4. Step 4: Simplify right side
    2,887.02x = 4,066,313.96
  5. Step 5: Solve for x
    x = 4,066,313.96/2,887.02
  6. Step 6: Final answer
    x = 1,408.48

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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.