Home / 6,140.12-9,210.06-1,980.44

Finding the Fourth Proportional to 6,140.12, 9,210.06 and 1,980.44

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Solution

The fourth proportional to 6,140.12, 9,210.06 and 1,980.44 is: 2,970.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.12 : 9,210.06 = 1,980.44 : x
  2. Step 2: Convert to fraction form
    6,140.12/9,210.06 = 1,980.44/x
  3. Step 3: Cross multiply
    6,140.12x = 9,210.06 × 1,980.44
  4. Step 4: Simplify right side
    6,140.12x = 18,239,971.23
  5. Step 5: Solve for x
    x = 18,239,971.23/6,140.12
  6. Step 6: Final answer
    x = 2,970.62

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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.