Home / 9,987.75-13,783.53-5,740.18

Finding the Fourth Proportional to 9,987.75, 13,783.53 and 5,740.18

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Solution

The fourth proportional to 9,987.75, 13,783.53 and 5,740.18 is: 7,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.75 : 13,783.53 = 5,740.18 : x
  2. Step 2: Convert to fraction form
    9,987.75/13,783.53 = 5,740.18/x
  3. Step 3: Cross multiply
    9,987.75x = 13,783.53 × 5,740.18
  4. Step 4: Simplify right side
    9,987.75x = 79,119,930.30
  5. Step 5: Solve for x
    x = 79,119,930.30/9,987.75
  6. Step 6: Final answer
    x = 7,921.70

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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.