Home / 1,142.12-1,712.01-526.28

Finding the Fourth Proportional to 1,142.12, 1,712.01 and 526.28

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Solution

The fourth proportional to 1,142.12, 1,712.01 and 526.28 is: 788.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142.12 : 1,712.01 = 526.28 : x
  2. Step 2: Convert to fraction form
    1,142.12/1,712.01 = 526.28/x
  3. Step 3: Cross multiply
    1,142.12x = 1,712.01 × 526.28
  4. Step 4: Simplify right side
    1,142.12x = 900,988.06
  5. Step 5: Solve for x
    x = 900,988.06/1,142.12
  6. Step 6: Final answer
    x = 788.88

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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.