Home / 8,619.01-11,890.49-5,430.37

Finding the Fourth Proportional to 8,619.01, 11,890.49 and 5,430.37

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Solution

The fourth proportional to 8,619.01, 11,890.49 and 5,430.37 is: 7,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.01 : 11,890.49 = 5,430.37 : x
  2. Step 2: Convert to fraction form
    8,619.01/11,890.49 = 5,430.37/x
  3. Step 3: Cross multiply
    8,619.01x = 11,890.49 × 5,430.37
  4. Step 4: Simplify right side
    8,619.01x = 64,569,733.03
  5. Step 5: Solve for x
    x = 64,569,733.03/8,619.01
  6. Step 6: Final answer
    x = 7,491.55

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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.