Home / 9,985.36-13,780.68-5,510.08

Finding the Fourth Proportional to 9,985.36, 13,780.68 and 5,510.08

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Solution

The fourth proportional to 9,985.36, 13,780.68 and 5,510.08 is: 7,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.36 : 13,780.68 = 5,510.08 : x
  2. Step 2: Convert to fraction form
    9,985.36/13,780.68 = 5,510.08/x
  3. Step 3: Cross multiply
    9,985.36x = 13,780.68 × 5,510.08
  4. Step 4: Simplify right side
    9,985.36x = 75,932,649.25
  5. Step 5: Solve for x
    x = 75,932,649.25/9,985.36
  6. Step 6: Final answer
    x = 7,604.40

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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.