Home / 7,498.79-10,340.57-6,440.06

Finding the Fourth Proportional to 7,498.79, 10,340.57 and 6,440.06

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Solution

The fourth proportional to 7,498.79, 10,340.57 and 6,440.06 is: 8,880.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,498.79 : 10,340.57 = 6,440.06 : x
  2. Step 2: Convert to fraction form
    7,498.79/10,340.57 = 6,440.06/x
  3. Step 3: Cross multiply
    7,498.79x = 10,340.57 × 6,440.06
  4. Step 4: Simplify right side
    7,498.79x = 66,593,807.33
  5. Step 5: Solve for x
    x = 66,593,807.33/7,498.79
  6. Step 6: Final answer
    x = 8,880.61

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Half scale
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Double scale
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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.