Home / 3,953.02-5,929.80-1,320.43

Finding the Fourth Proportional to 3,953.02, 5,929.80 and 1,320.43

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Solution

The fourth proportional to 3,953.02, 5,929.80 and 1,320.43 is: 1,980.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.02 : 5,929.80 = 1,320.43 : x
  2. Step 2: Convert to fraction form
    3,953.02/5,929.80 = 1,320.43/x
  3. Step 3: Cross multiply
    3,953.02x = 5,929.80 × 1,320.43
  4. Step 4: Simplify right side
    3,953.02x = 7,829,885.81
  5. Step 5: Solve for x
    x = 7,829,885.81/3,953.02
  6. Step 6: Final answer
    x = 1,980.74

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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.