Home / 9,866.07-13,615.13-5,389.77

Finding the Fourth Proportional to 9,866.07, 13,615.13 and 5,389.77

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Solution

The fourth proportional to 9,866.07, 13,615.13 and 5,389.77 is: 7,437.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,866.07 : 13,615.13 = 5,389.77 : x
  2. Step 2: Convert to fraction form
    9,866.07/13,615.13 = 5,389.77/x
  3. Step 3: Cross multiply
    9,866.07x = 13,615.13 × 5,389.77
  4. Step 4: Simplify right side
    9,866.07x = 73,382,392.27
  5. Step 5: Solve for x
    x = 73,382,392.27/9,866.07
  6. Step 6: Final answer
    x = 7,437.85

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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.