Home / 9,670.81-13,345.70-5,479.06

Finding the Fourth Proportional to 9,670.81, 13,345.70 and 5,479.06

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Solution

The fourth proportional to 9,670.81, 13,345.70 and 5,479.06 is: 7,561.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,670.81 : 13,345.70 = 5,479.06 : x
  2. Step 2: Convert to fraction form
    9,670.81/13,345.70 = 5,479.06/x
  3. Step 3: Cross multiply
    9,670.81x = 13,345.70 × 5,479.06
  4. Step 4: Simplify right side
    9,670.81x = 73,121,863.65
  5. Step 5: Solve for x
    x = 73,121,863.65/9,670.81
  6. Step 6: Final answer
    x = 7,561.09

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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.