Home / 1,688.84-2,330.58-942.81

Finding the Fourth Proportional to 1,688.84, 2,330.58 and 942.81

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Solution

The fourth proportional to 1,688.84, 2,330.58 and 942.81 is: 1,301.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.84 : 2,330.58 = 942.81 : x
  2. Step 2: Convert to fraction form
    1,688.84/2,330.58 = 942.81/x
  3. Step 3: Cross multiply
    1,688.84x = 2,330.58 × 942.81
  4. Step 4: Simplify right side
    1,688.84x = 2,197,294.13
  5. Step 5: Solve for x
    x = 2,197,294.13/1,688.84
  6. Step 6: Final answer
    x = 1,301.07

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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.