Home / 5,385.47-8,078.63-1,436.74

Finding the Fourth Proportional to 5,385.47, 8,078.63 and 1,436.74

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Solution

The fourth proportional to 5,385.47, 8,078.63 and 1,436.74 is: 2,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.47 : 8,078.63 = 1,436.74 : x
  2. Step 2: Convert to fraction form
    5,385.47/8,078.63 = 1,436.74/x
  3. Step 3: Cross multiply
    5,385.47x = 8,078.63 × 1,436.74
  4. Step 4: Simplify right side
    5,385.47x = 11,606,863.49
  5. Step 5: Solve for x
    x = 11,606,863.49/5,385.47
  6. Step 6: Final answer
    x = 2,155.22

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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.