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Finding the Fourth Proportional to 7,857.63, 10,840.19 and 6,657.51

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Solution

The fourth proportional to 7,857.63, 10,840.19 and 6,657.51 is: 9,184.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.63 : 10,840.19 = 6,657.51 : x
  2. Step 2: Convert to fraction form
    7,857.63/10,840.19 = 6,657.51/x
  3. Step 3: Cross multiply
    7,857.63x = 10,840.19 × 6,657.51
  4. Step 4: Simplify right side
    7,857.63x = 72,168,673.33
  5. Step 5: Solve for x
    x = 72,168,673.33/7,857.63
  6. Step 6: Final answer
    x = 9,184.53

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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.