Home / 9,275.40-12,790.98-7,698.60

Finding the Fourth Proportional to 9,275.40, 12,790.98 and 7,698.60

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Solution

The fourth proportional to 9,275.40, 12,790.98 and 7,698.60 is: 10,616.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,275.40 : 12,790.98 = 7,698.60 : x
  2. Step 2: Convert to fraction form
    9,275.40/12,790.98 = 7,698.60/x
  3. Step 3: Cross multiply
    9,275.40x = 12,790.98 × 7,698.60
  4. Step 4: Simplify right side
    9,275.40x = 98,472,638.63
  5. Step 5: Solve for x
    x = 98,472,638.63/9,275.40
  6. Step 6: Final answer
    x = 10,616.54

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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.