Home / 1,688.83-2,330.54-942.79

Finding the Fourth Proportional to 1,688.83, 2,330.54 and 942.79

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Solution

The fourth proportional to 1,688.83, 2,330.54 and 942.79 is: 1,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.83 : 2,330.54 = 942.79 : x
  2. Step 2: Convert to fraction form
    1,688.83/2,330.54 = 942.79/x
  3. Step 3: Cross multiply
    1,688.83x = 2,330.54 × 942.79
  4. Step 4: Simplify right side
    1,688.83x = 2,197,207.17
  5. Step 5: Solve for x
    x = 2,197,207.17/1,688.83
  6. Step 6: Final answer
    x = 1,301.02

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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.