Home / 1,690.67-2,330.33-1,130.93

Finding the Fourth Proportional to 1,690.67, 2,330.33 and 1,130.93

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Solution

The fourth proportional to 1,690.67, 2,330.33 and 1,130.93 is: 1,558.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.67 : 2,330.33 = 1,130.93 : x
  2. Step 2: Convert to fraction form
    1,690.67/2,330.33 = 1,130.93/x
  3. Step 3: Cross multiply
    1,690.67x = 2,330.33 × 1,130.93
  4. Step 4: Simplify right side
    1,690.67x = 2,635,440.11
  5. Step 5: Solve for x
    x = 2,635,440.11/1,690.67
  6. Step 6: Final answer
    x = 1,558.81

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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.