Home / 3,129.37-4,318.10-1,870.16

Finding the Fourth Proportional to 3,129.37, 4,318.10 and 1,870.16

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Solution

The fourth proportional to 3,129.37, 4,318.10 and 1,870.16 is: 2,580.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.37 : 4,318.10 = 1,870.16 : x
  2. Step 2: Convert to fraction form
    3,129.37/4,318.10 = 1,870.16/x
  3. Step 3: Cross multiply
    3,129.37x = 4,318.10 × 1,870.16
  4. Step 4: Simplify right side
    3,129.37x = 8,075,506.95
  5. Step 5: Solve for x
    x = 8,075,506.95/3,129.37
  6. Step 6: Final answer
    x = 2,580.56

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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.