Home / 9,130.81-12,600.47-4,939.09

Finding the Fourth Proportional to 9,130.81, 12,600.47 and 4,939.09

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Solution

The fourth proportional to 9,130.81, 12,600.47 and 4,939.09 is: 6,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.81 : 12,600.47 = 4,939.09 : x
  2. Step 2: Convert to fraction form
    9,130.81/12,600.47 = 4,939.09/x
  3. Step 3: Cross multiply
    9,130.81x = 12,600.47 × 4,939.09
  4. Step 4: Simplify right side
    9,130.81x = 62,234,830.68
  5. Step 5: Solve for x
    x = 62,234,830.68/9,130.81
  6. Step 6: Final answer
    x = 6,815.92

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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.