Home / 1,357.78-2,031.81-1,335.91

Finding the Fourth Proportional to 1,357.78, 2,031.81 and 1,335.91

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Solution

The fourth proportional to 1,357.78, 2,031.81 and 1,335.91 is: 1,999.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.78 : 2,031.81 = 1,335.91 : x
  2. Step 2: Convert to fraction form
    1,357.78/2,031.81 = 1,335.91/x
  3. Step 3: Cross multiply
    1,357.78x = 2,031.81 × 1,335.91
  4. Step 4: Simplify right side
    1,357.78x = 2,714,315.30
  5. Step 5: Solve for x
    x = 2,714,315.30/1,357.78
  6. Step 6: Final answer
    x = 1,999.08

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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.