Home / 9,320.48-12,862.08-5,128.64

Finding the Fourth Proportional to 9,320.48, 12,862.08 and 5,128.64

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Solution

The fourth proportional to 9,320.48, 12,862.08 and 5,128.64 is: 7,077.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.48 : 12,862.08 = 5,128.64 : x
  2. Step 2: Convert to fraction form
    9,320.48/12,862.08 = 5,128.64/x
  3. Step 3: Cross multiply
    9,320.48x = 12,862.08 × 5,128.64
  4. Step 4: Simplify right side
    9,320.48x = 65,964,977.97
  5. Step 5: Solve for x
    x = 65,964,977.97/9,320.48
  6. Step 6: Final answer
    x = 7,077.42

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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.