Home / 5,088.70-7,633.47-1,390.96

Finding the Fourth Proportional to 5,088.70, 7,633.47 and 1,390.96

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Solution

The fourth proportional to 5,088.70, 7,633.47 and 1,390.96 is: 2,086.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,088.70 : 7,633.47 = 1,390.96 : x
  2. Step 2: Convert to fraction form
    5,088.70/7,633.47 = 1,390.96/x
  3. Step 3: Cross multiply
    5,088.70x = 7,633.47 × 1,390.96
  4. Step 4: Simplify right side
    5,088.70x = 10,617,851.43
  5. Step 5: Solve for x
    x = 10,617,851.43/5,088.70
  6. Step 6: Final answer
    x = 2,086.55

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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.