Home / 7,237.20-10,855.80-4,742.40

Finding the Fourth Proportional to 7,237.20, 10,855.80 and 4,742.40

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Solution

The fourth proportional to 7,237.20, 10,855.80 and 4,742.40 is: 7,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,237.20 : 10,855.80 = 4,742.40 : x
  2. Step 2: Convert to fraction form
    7,237.20/10,855.80 = 4,742.40/x
  3. Step 3: Cross multiply
    7,237.20x = 10,855.80 × 4,742.40
  4. Step 4: Simplify right side
    7,237.20x = 51,482,545.92
  5. Step 5: Solve for x
    x = 51,482,545.92/7,237.20
  6. Step 6: Final answer
    x = 7,113.60

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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.