Home / 7,130.20-10,695.30-3,181.45

Finding the Fourth Proportional to 7,130.20, 10,695.30 and 3,181.45

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Solution

The fourth proportional to 7,130.20, 10,695.30 and 3,181.45 is: 4,772.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.20 : 10,695.30 = 3,181.45 : x
  2. Step 2: Convert to fraction form
    7,130.20/10,695.30 = 3,181.45/x
  3. Step 3: Cross multiply
    7,130.20x = 10,695.30 × 3,181.45
  4. Step 4: Simplify right side
    7,130.20x = 34,026,562.19
  5. Step 5: Solve for x
    x = 34,026,562.19/7,130.20
  6. Step 6: Final answer
    x = 4,772.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.