Home / 5,340.81-8,011.20-2,970.39

Finding the Fourth Proportional to 5,340.81, 8,011.20 and 2,970.39

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Solution

The fourth proportional to 5,340.81, 8,011.20 and 2,970.39 is: 4,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,340.81 : 8,011.20 = 2,970.39 : x
  2. Step 2: Convert to fraction form
    5,340.81/8,011.20 = 2,970.39/x
  3. Step 3: Cross multiply
    5,340.81x = 8,011.20 × 2,970.39
  4. Step 4: Simplify right side
    5,340.81x = 23,796,388.37
  5. Step 5: Solve for x
    x = 23,796,388.37/5,340.81
  6. Step 6: Final answer
    x = 4,455.58

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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.