Home / 3,129.34-4,318.19-1,870.14

Finding the Fourth Proportional to 3,129.34, 4,318.19 and 1,870.14

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Solution

The fourth proportional to 3,129.34, 4,318.19 and 1,870.14 is: 2,580.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.34 : 4,318.19 = 1,870.14 : x
  2. Step 2: Convert to fraction form
    3,129.34/4,318.19 = 1,870.14/x
  3. Step 3: Cross multiply
    3,129.34x = 4,318.19 × 1,870.14
  4. Step 4: Simplify right side
    3,129.34x = 8,075,610.50
  5. Step 5: Solve for x
    x = 8,075,610.50/3,129.34
  6. Step 6: Final answer
    x = 2,580.61

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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.