Home / 1,989.74-2,984.40-529.04

Finding the Fourth Proportional to 1,989.74, 2,984.40 and 529.04

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Solution

The fourth proportional to 1,989.74, 2,984.40 and 529.04 is: 793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.74 : 2,984.40 = 529.04 : x
  2. Step 2: Convert to fraction form
    1,989.74/2,984.40 = 529.04/x
  3. Step 3: Cross multiply
    1,989.74x = 2,984.40 × 529.04
  4. Step 4: Simplify right side
    1,989.74x = 1,578,852.05
  5. Step 5: Solve for x
    x = 1,578,852.05/1,989.74
  6. Step 6: Final answer
    x = 793.50

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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.