Home / 7,631.70-10,531.21-4,228.68

Finding the Fourth Proportional to 7,631.70, 10,531.21 and 4,228.68

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Solution

The fourth proportional to 7,631.70, 10,531.21 and 4,228.68 is: 5,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.70 : 10,531.21 = 4,228.68 : x
  2. Step 2: Convert to fraction form
    7,631.70/10,531.21 = 4,228.68/x
  3. Step 3: Cross multiply
    7,631.70x = 10,531.21 × 4,228.68
  4. Step 4: Simplify right side
    7,631.70x = 44,533,117.10
  5. Step 5: Solve for x
    x = 44,533,117.10/7,631.70
  6. Step 6: Final answer
    x = 5,835.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.