Home / 5,237.40-7,808.10-4,775.70

Finding the Fourth Proportional to 5,237.40, 7,808.10 and 4,775.70

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Solution

The fourth proportional to 5,237.40, 7,808.10 and 4,775.70 is: 7,119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,237.40 : 7,808.10 = 4,775.70 : x
  2. Step 2: Convert to fraction form
    5,237.40/7,808.10 = 4,775.70/x
  3. Step 3: Cross multiply
    5,237.40x = 7,808.10 × 4,775.70
  4. Step 4: Simplify right side
    5,237.40x = 37,289,143.17
  5. Step 5: Solve for x
    x = 37,289,143.17/5,237.40
  6. Step 6: Final answer
    x = 7,119.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.