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Finding the Fourth Proportional to 7,840.03, 10,819.18 and 4,254.91

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Solution

The fourth proportional to 7,840.03, 10,819.18 and 4,254.91 is: 5,871.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.03 : 10,819.18 = 4,254.91 : x
  2. Step 2: Convert to fraction form
    7,840.03/10,819.18 = 4,254.91/x
  3. Step 3: Cross multiply
    7,840.03x = 10,819.18 × 4,254.91
  4. Step 4: Simplify right side
    7,840.03x = 46,034,637.17
  5. Step 5: Solve for x
    x = 46,034,637.17/7,840.03
  6. Step 6: Final answer
    x = 5,871.74

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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.