Home / 9,988.54-13,784.85-5,740.99

Finding the Fourth Proportional to 9,988.54, 13,784.85 and 5,740.99

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Solution

The fourth proportional to 9,988.54, 13,784.85 and 5,740.99 is: 7,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.54 : 13,784.85 = 5,740.99 : x
  2. Step 2: Convert to fraction form
    9,988.54/13,784.85 = 5,740.99/x
  3. Step 3: Cross multiply
    9,988.54x = 13,784.85 × 5,740.99
  4. Step 4: Simplify right side
    9,988.54x = 79,138,651.54
  5. Step 5: Solve for x
    x = 79,138,651.54/9,988.54
  6. Step 6: Final answer
    x = 7,922.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.