Home / 1,688.88-2,330.83-943.10

Finding the Fourth Proportional to 1,688.88, 2,330.83 and 943.10

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Solution

The fourth proportional to 1,688.88, 2,330.83 and 943.10 is: 1,301.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.88 : 2,330.83 = 943.10 : x
  2. Step 2: Convert to fraction form
    1,688.88/2,330.83 = 943.10/x
  3. Step 3: Cross multiply
    1,688.88x = 2,330.83 × 943.10
  4. Step 4: Simplify right side
    1,688.88x = 2,198,194.12
  5. Step 5: Solve for x
    x = 2,198,194.12/1,688.88
  6. Step 6: Final answer
    x = 1,301.57

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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.