Home / 9,120.80-13,689.66-4,681.64

Finding the Fourth Proportional to 9,120.80, 13,689.66 and 4,681.64

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Solution

The fourth proportional to 9,120.80, 13,689.66 and 4,681.64 is: 7,026.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.80 : 13,689.66 = 4,681.64 : x
  2. Step 2: Convert to fraction form
    9,120.80/13,689.66 = 4,681.64/x
  3. Step 3: Cross multiply
    9,120.80x = 13,689.66 × 4,681.64
  4. Step 4: Simplify right side
    9,120.80x = 64,090,059.84
  5. Step 5: Solve for x
    x = 64,090,059.84/9,120.80
  6. Step 6: Final answer
    x = 7,026.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.