Home / 9,985.05-13,779.41-5,508.80

Finding the Fourth Proportional to 9,985.05, 13,779.41 and 5,508.80

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Solution

The fourth proportional to 9,985.05, 13,779.41 and 5,508.80 is: 7,602.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.05 : 13,779.41 = 5,508.80 : x
  2. Step 2: Convert to fraction form
    9,985.05/13,779.41 = 5,508.80/x
  3. Step 3: Cross multiply
    9,985.05x = 13,779.41 × 5,508.80
  4. Step 4: Simplify right side
    9,985.05x = 75,907,931.14
  5. Step 5: Solve for x
    x = 75,907,931.14/9,985.05
  6. Step 6: Final answer
    x = 7,602.16

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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.