Home / 9,133.28-12,582.06-8,688.60

Finding the Fourth Proportional to 9,133.28, 12,582.06 and 8,688.60

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Solution

The fourth proportional to 9,133.28, 12,582.06 and 8,688.60 is: 11,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.28 : 12,582.06 = 8,688.60 : x
  2. Step 2: Convert to fraction form
    9,133.28/12,582.06 = 8,688.60/x
  3. Step 3: Cross multiply
    9,133.28x = 12,582.06 × 8,688.60
  4. Step 4: Simplify right side
    9,133.28x = 109,320,486.52
  5. Step 5: Solve for x
    x = 109,320,486.52/9,133.28
  6. Step 6: Final answer
    x = 11,969.47

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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.