Home / 1,688.81-2,330.62-942.77

Finding the Fourth Proportional to 1,688.81, 2,330.62 and 942.77

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Solution

The fourth proportional to 1,688.81, 2,330.62 and 942.77 is: 1,301.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.81 : 2,330.62 = 942.77 : x
  2. Step 2: Convert to fraction form
    1,688.81/2,330.62 = 942.77/x
  3. Step 3: Cross multiply
    1,688.81x = 2,330.62 × 942.77
  4. Step 4: Simplify right side
    1,688.81x = 2,197,242.09
  5. Step 5: Solve for x
    x = 2,197,242.09/1,688.81
  6. Step 6: Final answer
    x = 1,301.06

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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.