Home / 4,737.80-7,109.40-1,818.20

Finding the Fourth Proportional to 4,737.80, 7,109.40 and 1,818.20

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Solution

The fourth proportional to 4,737.80, 7,109.40 and 1,818.20 is: 2,728.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,737.80 : 7,109.40 = 1,818.20 : x
  2. Step 2: Convert to fraction form
    4,737.80/7,109.40 = 1,818.20/x
  3. Step 3: Cross multiply
    4,737.80x = 7,109.40 × 1,818.20
  4. Step 4: Simplify right side
    4,737.80x = 12,926,311.08
  5. Step 5: Solve for x
    x = 12,926,311.08/4,737.80
  6. Step 6: Final answer
    x = 2,728.34

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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.