Home / 8,728.45-12,045.32-4,749.59

Finding the Fourth Proportional to 8,728.45, 12,045.32 and 4,749.59

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Solution

The fourth proportional to 8,728.45, 12,045.32 and 4,749.59 is: 6,554.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.45 : 12,045.32 = 4,749.59 : x
  2. Step 2: Convert to fraction form
    8,728.45/12,045.32 = 4,749.59/x
  3. Step 3: Cross multiply
    8,728.45x = 12,045.32 × 4,749.59
  4. Step 4: Simplify right side
    8,728.45x = 57,210,331.42
  5. Step 5: Solve for x
    x = 57,210,331.42/8,728.45
  6. Step 6: Final answer
    x = 6,554.47

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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.