Home / 7,089.60-10,634.80-2,159.40

Finding the Fourth Proportional to 7,089.60, 10,634.80 and 2,159.40

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Solution

The fourth proportional to 7,089.60, 10,634.80 and 2,159.40 is: 3,239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.60 : 10,634.80 = 2,159.40 : x
  2. Step 2: Convert to fraction form
    7,089.60/10,634.80 = 2,159.40/x
  3. Step 3: Cross multiply
    7,089.60x = 10,634.80 × 2,159.40
  4. Step 4: Simplify right side
    7,089.60x = 22,964,787.12
  5. Step 5: Solve for x
    x = 22,964,787.12/7,089.60
  6. Step 6: Final answer
    x = 3,239.22

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1.5x scale

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.