Home / 9,120.48-12,586.32-4,928.72

Finding the Fourth Proportional to 9,120.48, 12,586.32 and 4,928.72

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Solution

The fourth proportional to 9,120.48, 12,586.32 and 4,928.72 is: 6,801.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.48 : 12,586.32 = 4,928.72 : x
  2. Step 2: Convert to fraction form
    9,120.48/12,586.32 = 4,928.72/x
  3. Step 3: Cross multiply
    9,120.48x = 12,586.32 × 4,928.72
  4. Step 4: Simplify right side
    9,120.48x = 62,034,447.11
  5. Step 5: Solve for x
    x = 62,034,447.11/9,120.48
  6. Step 6: Final answer
    x = 6,801.66

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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.