Home / 9,290.34-12,820.20-5,513.66

Finding the Fourth Proportional to 9,290.34, 12,820.20 and 5,513.66

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Solution

The fourth proportional to 9,290.34, 12,820.20 and 5,513.66 is: 7,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,290.34 : 12,820.20 = 5,513.66 : x
  2. Step 2: Convert to fraction form
    9,290.34/12,820.20 = 5,513.66/x
  3. Step 3: Cross multiply
    9,290.34x = 12,820.20 × 5,513.66
  4. Step 4: Simplify right side
    9,290.34x = 70,686,196.36
  5. Step 5: Solve for x
    x = 70,686,196.36/9,290.34
  6. Step 6: Final answer
    x = 7,608.57

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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.