Home / 5,088.71-7,632.98-1,390.94

Finding the Fourth Proportional to 5,088.71, 7,632.98 and 1,390.94

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Solution

The fourth proportional to 5,088.71, 7,632.98 and 1,390.94 is: 2,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,088.71 : 7,632.98 = 1,390.94 : x
  2. Step 2: Convert to fraction form
    5,088.71/7,632.98 = 1,390.94/x
  3. Step 3: Cross multiply
    5,088.71x = 7,632.98 × 1,390.94
  4. Step 4: Simplify right side
    5,088.71x = 10,616,972.08
  5. Step 5: Solve for x
    x = 10,616,972.08/5,088.71
  6. Step 6: Final answer
    x = 2,086.38

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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.