Home / 4,200.78-6,300.87-1,427.25

Finding the Fourth Proportional to 4,200.78, 6,300.87 and 1,427.25

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Solution

The fourth proportional to 4,200.78, 6,300.87 and 1,427.25 is: 2,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.78 : 6,300.87 = 1,427.25 : x
  2. Step 2: Convert to fraction form
    4,200.78/6,300.87 = 1,427.25/x
  3. Step 3: Cross multiply
    4,200.78x = 6,300.87 × 1,427.25
  4. Step 4: Simplify right side
    4,200.78x = 8,992,916.71
  5. Step 5: Solve for x
    x = 8,992,916.71/4,200.78
  6. Step 6: Final answer
    x = 2,140.77

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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.