Home / 9,120.75-12,586.64-4,929

Finding the Fourth Proportional to 9,120.75, 12,586.64 and 4,929

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Solution

The fourth proportional to 9,120.75, 12,586.64 and 4,929 is: 6,802.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.75 : 12,586.64 = 4,929 : x
  2. Step 2: Convert to fraction form
    9,120.75/12,586.64 = 4,929/x
  3. Step 3: Cross multiply
    9,120.75x = 12,586.64 × 4,929
  4. Step 4: Simplify right side
    9,120.75x = 62,039,523.92
  5. Step 5: Solve for x
    x = 62,039,523.92/9,120.75
  6. Step 6: Final answer
    x = 6,802.02

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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.