Home / 1,135.84-1,566.48-1,020.64

Finding the Fourth Proportional to 1,135.84, 1,566.48 and 1,020.64

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Solution

The fourth proportional to 1,135.84, 1,566.48 and 1,020.64 is: 1,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.84 : 1,566.48 = 1,020.64 : x
  2. Step 2: Convert to fraction form
    1,135.84/1,566.48 = 1,020.64/x
  3. Step 3: Cross multiply
    1,135.84x = 1,566.48 × 1,020.64
  4. Step 4: Simplify right side
    1,135.84x = 1,598,812.15
  5. Step 5: Solve for x
    x = 1,598,812.15/1,135.84
  6. Step 6: Final answer
    x = 1,407.60

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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.