Home / 1,807.60-2,495.90-1,387.29

Finding the Fourth Proportional to 1,807.60, 2,495.90 and 1,387.29

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Solution

The fourth proportional to 1,807.60, 2,495.90 and 1,387.29 is: 1,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.60 : 2,495.90 = 1,387.29 : x
  2. Step 2: Convert to fraction form
    1,807.60/2,495.90 = 1,387.29/x
  3. Step 3: Cross multiply
    1,807.60x = 2,495.90 × 1,387.29
  4. Step 4: Simplify right side
    1,807.60x = 3,462,537.11
  5. Step 5: Solve for x
    x = 3,462,537.11/1,807.60
  6. Step 6: Final answer
    x = 1,915.54

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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.