Home / 1,130.18-1,556.39-931.87

Finding the Fourth Proportional to 1,130.18, 1,556.39 and 931.87

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Solution

The fourth proportional to 1,130.18, 1,556.39 and 931.87 is: 1,283.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.18 : 1,556.39 = 931.87 : x
  2. Step 2: Convert to fraction form
    1,130.18/1,556.39 = 931.87/x
  3. Step 3: Cross multiply
    1,130.18x = 1,556.39 × 931.87
  4. Step 4: Simplify right side
    1,130.18x = 1,450,353.15
  5. Step 5: Solve for x
    x = 1,450,353.15/1,130.18
  6. Step 6: Final answer
    x = 1,283.29

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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.