Home / 9,120.25-12,581.08-6,130.95

Finding the Fourth Proportional to 9,120.25, 12,581.08 and 6,130.95

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Solution

The fourth proportional to 9,120.25, 12,581.08 and 6,130.95 is: 8,457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.25 : 12,581.08 = 6,130.95 : x
  2. Step 2: Convert to fraction form
    9,120.25/12,581.08 = 6,130.95/x
  3. Step 3: Cross multiply
    9,120.25x = 12,581.08 × 6,130.95
  4. Step 4: Simplify right side
    9,120.25x = 77,133,972.43
  5. Step 5: Solve for x
    x = 77,133,972.43/9,120.25
  6. Step 6: Final answer
    x = 8,457.44

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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.