Home / 9,661.55-13,343.46-7,779.36

Finding the Fourth Proportional to 9,661.55, 13,343.46 and 7,779.36

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Solution

The fourth proportional to 9,661.55, 13,343.46 and 7,779.36 is: 10,743.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,661.55 : 13,343.46 = 7,779.36 : x
  2. Step 2: Convert to fraction form
    9,661.55/13,343.46 = 7,779.36/x
  3. Step 3: Cross multiply
    9,661.55x = 13,343.46 × 7,779.36
  4. Step 4: Simplify right side
    9,661.55x = 103,803,578.99
  5. Step 5: Solve for x
    x = 103,803,578.99/9,661.55
  6. Step 6: Final answer
    x = 10,743.99

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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.