Home / 7,139.70-10,701.27-4,220.46

Finding the Fourth Proportional to 7,139.70, 10,701.27 and 4,220.46

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Solution

The fourth proportional to 7,139.70, 10,701.27 and 4,220.46 is: 6,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.70 : 10,701.27 = 4,220.46 : x
  2. Step 2: Convert to fraction form
    7,139.70/10,701.27 = 4,220.46/x
  3. Step 3: Cross multiply
    7,139.70x = 10,701.27 × 4,220.46
  4. Step 4: Simplify right side
    7,139.70x = 45,164,281.98
  5. Step 5: Solve for x
    x = 45,164,281.98/7,139.70
  6. Step 6: Final answer
    x = 6,325.80

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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.