Home / 9,128.96-12,595.02-7,208.68

Finding the Fourth Proportional to 9,128.96, 12,595.02 and 7,208.68

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Solution

The fourth proportional to 9,128.96, 12,595.02 and 7,208.68 is: 9,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.96 : 12,595.02 = 7,208.68 : x
  2. Step 2: Convert to fraction form
    9,128.96/12,595.02 = 7,208.68/x
  3. Step 3: Cross multiply
    9,128.96x = 12,595.02 × 7,208.68
  4. Step 4: Simplify right side
    9,128.96x = 90,793,500.26
  5. Step 5: Solve for x
    x = 90,793,500.26/9,128.96
  6. Step 6: Final answer
    x = 9,945.66

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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.