Home / 9,345.19-12,896.31-5,153.44

Finding the Fourth Proportional to 9,345.19, 12,896.31 and 5,153.44

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Solution

The fourth proportional to 9,345.19, 12,896.31 and 5,153.44 is: 7,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,345.19 : 12,896.31 = 5,153.44 : x
  2. Step 2: Convert to fraction form
    9,345.19/12,896.31 = 5,153.44/x
  3. Step 3: Cross multiply
    9,345.19x = 12,896.31 × 5,153.44
  4. Step 4: Simplify right side
    9,345.19x = 66,460,359.81
  5. Step 5: Solve for x
    x = 66,460,359.81/9,345.19
  6. Step 6: Final answer
    x = 7,111.72

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Half scale
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Double scale
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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.