Home / 1,607.55-2,215.85-1,312.31

Finding the Fourth Proportional to 1,607.55, 2,215.85 and 1,312.31

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Solution

The fourth proportional to 1,607.55, 2,215.85 and 1,312.31 is: 1,808.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.55 : 2,215.85 = 1,312.31 : x
  2. Step 2: Convert to fraction form
    1,607.55/2,215.85 = 1,312.31/x
  3. Step 3: Cross multiply
    1,607.55x = 2,215.85 × 1,312.31
  4. Step 4: Simplify right side
    1,607.55x = 2,907,882.11
  5. Step 5: Solve for x
    x = 2,907,882.11/1,607.55
  6. Step 6: Final answer
    x = 1,808.89

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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.