Home / 1,953.08-2,929.61-720.53

Finding the Fourth Proportional to 1,953.08, 2,929.61 and 720.53

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Solution

The fourth proportional to 1,953.08, 2,929.61 and 720.53 is: 1,080.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.08 : 2,929.61 = 720.53 : x
  2. Step 2: Convert to fraction form
    1,953.08/2,929.61 = 720.53/x
  3. Step 3: Cross multiply
    1,953.08x = 2,929.61 × 720.53
  4. Step 4: Simplify right side
    1,953.08x = 2,110,871.89
  5. Step 5: Solve for x
    x = 2,110,871.89/1,953.08
  6. Step 6: Final answer
    x = 1,080.79

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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.