Home / 7,742.90-10,685.31-4,385.63

Finding the Fourth Proportional to 7,742.90, 10,685.31 and 4,385.63

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Solution

The fourth proportional to 7,742.90, 10,685.31 and 4,385.63 is: 6,052.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.90 : 10,685.31 = 4,385.63 : x
  2. Step 2: Convert to fraction form
    7,742.90/10,685.31 = 4,385.63/x
  3. Step 3: Cross multiply
    7,742.90x = 10,685.31 × 4,385.63
  4. Step 4: Simplify right side
    7,742.90x = 46,861,762.67
  5. Step 5: Solve for x
    x = 46,861,762.67/7,742.90
  6. Step 6: Final answer
    x = 6,052.23

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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.