Home / 9,615.36-13,271.40-5,636.64

Finding the Fourth Proportional to 9,615.36, 13,271.40 and 5,636.64

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Solution

The fourth proportional to 9,615.36, 13,271.40 and 5,636.64 is: 7,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,615.36 : 13,271.40 = 5,636.64 : x
  2. Step 2: Convert to fraction form
    9,615.36/13,271.40 = 5,636.64/x
  3. Step 3: Cross multiply
    9,615.36x = 13,271.40 × 5,636.64
  4. Step 4: Simplify right side
    9,615.36x = 74,806,104.10
  5. Step 5: Solve for x
    x = 74,806,104.10/9,615.36
  6. Step 6: Final answer
    x = 7,779.85

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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.