Home / 9,678.47-13,357.96-5,699.75

Finding the Fourth Proportional to 9,678.47, 13,357.96 and 5,699.75

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Solution

The fourth proportional to 9,678.47, 13,357.96 and 5,699.75 is: 7,866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.47 : 13,357.96 = 5,699.75 : x
  2. Step 2: Convert to fraction form
    9,678.47/13,357.96 = 5,699.75/x
  3. Step 3: Cross multiply
    9,678.47x = 13,357.96 × 5,699.75
  4. Step 4: Simplify right side
    9,678.47x = 76,136,951.47
  5. Step 5: Solve for x
    x = 76,136,951.47/9,678.47
  6. Step 6: Final answer
    x = 7,866.63

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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.