Home / 4,155.40-6,227.70-1,688.20

Finding the Fourth Proportional to 4,155.40, 6,227.70 and 1,688.20

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Solution

The fourth proportional to 4,155.40, 6,227.70 and 1,688.20 is: 2,530.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,155.40 : 6,227.70 = 1,688.20 : x
  2. Step 2: Convert to fraction form
    4,155.40/6,227.70 = 1,688.20/x
  3. Step 3: Cross multiply
    4,155.40x = 6,227.70 × 1,688.20
  4. Step 4: Simplify right side
    4,155.40x = 10,513,603.14
  5. Step 5: Solve for x
    x = 10,513,603.14/4,155.40
  6. Step 6: Final answer
    x = 2,530.11

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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.