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Finding the Fourth Proportional to 7,824.81, 10,798.40 and 4,840.59

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Solution

The fourth proportional to 7,824.81, 10,798.40 and 4,840.59 is: 6,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824.81 : 10,798.40 = 4,840.59 : x
  2. Step 2: Convert to fraction form
    7,824.81/10,798.40 = 4,840.59/x
  3. Step 3: Cross multiply
    7,824.81x = 10,798.40 × 4,840.59
  4. Step 4: Simplify right side
    7,824.81x = 52,270,602.85
  5. Step 5: Solve for x
    x = 52,270,602.85/7,824.81
  6. Step 6: Final answer
    x = 6,680.11

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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.