Home / 1,807.43-2,495.66-1,387.11

Finding the Fourth Proportional to 1,807.43, 2,495.66 and 1,387.11

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Solution

The fourth proportional to 1,807.43, 2,495.66 and 1,387.11 is: 1,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.43 : 2,495.66 = 1,387.11 : x
  2. Step 2: Convert to fraction form
    1,807.43/2,495.66 = 1,387.11/x
  3. Step 3: Cross multiply
    1,807.43x = 2,495.66 × 1,387.11
  4. Step 4: Simplify right side
    1,807.43x = 3,461,769.07
  5. Step 5: Solve for x
    x = 3,461,769.07/1,807.43
  6. Step 6: Final answer
    x = 1,915.30

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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.