Home / 3,137.40-4,705.02-1,405.08

Finding the Fourth Proportional to 3,137.40, 4,705.02 and 1,405.08

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Solution

The fourth proportional to 3,137.40, 4,705.02 and 1,405.08 is: 2,107.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.40 : 4,705.02 = 1,405.08 : x
  2. Step 2: Convert to fraction form
    3,137.40/4,705.02 = 1,405.08/x
  3. Step 3: Cross multiply
    3,137.40x = 4,705.02 × 1,405.08
  4. Step 4: Simplify right side
    3,137.40x = 6,610,929.50
  5. Step 5: Solve for x
    x = 6,610,929.50/3,137.40
  6. Step 6: Final answer
    x = 2,107.14

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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.