Home / 6,140.15-9,210.23-1,980.46

Finding the Fourth Proportional to 6,140.15, 9,210.23 and 1,980.46

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Solution

The fourth proportional to 6,140.15, 9,210.23 and 1,980.46 is: 2,970.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.15 : 9,210.23 = 1,980.46 : x
  2. Step 2: Convert to fraction form
    6,140.15/9,210.23 = 1,980.46/x
  3. Step 3: Cross multiply
    6,140.15x = 9,210.23 × 1,980.46
  4. Step 4: Simplify right side
    6,140.15x = 18,240,474.03
  5. Step 5: Solve for x
    x = 18,240,474.03/6,140.15
  6. Step 6: Final answer
    x = 2,970.69

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Double scale
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Similar ratio
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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.