Home / 1,556.17-2,334.66-690.28

Finding the Fourth Proportional to 1,556.17, 2,334.66 and 690.28

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Solution

The fourth proportional to 1,556.17, 2,334.66 and 690.28 is: 1,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.17 : 2,334.66 = 690.28 : x
  2. Step 2: Convert to fraction form
    1,556.17/2,334.66 = 690.28/x
  3. Step 3: Cross multiply
    1,556.17x = 2,334.66 × 690.28
  4. Step 4: Simplify right side
    1,556.17x = 1,611,569.10
  5. Step 5: Solve for x
    x = 1,611,569.10/1,556.17
  6. Step 6: Final answer
    x = 1,035.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.