Home / 9,628.23-13,285.65-5,378.77

Finding the Fourth Proportional to 9,628.23, 13,285.65 and 5,378.77

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Solution

The fourth proportional to 9,628.23, 13,285.65 and 5,378.77 is: 7,421.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,628.23 : 13,285.65 = 5,378.77 : x
  2. Step 2: Convert to fraction form
    9,628.23/13,285.65 = 5,378.77/x
  3. Step 3: Cross multiply
    9,628.23x = 13,285.65 × 5,378.77
  4. Step 4: Simplify right side
    9,628.23x = 71,460,422.44
  5. Step 5: Solve for x
    x = 71,460,422.44/9,628.23
  6. Step 6: Final answer
    x = 7,421.97

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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.