Home / 2,455.18-3,387.80-1,570.34

Finding the Fourth Proportional to 2,455.18, 3,387.80 and 1,570.34

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Solution

The fourth proportional to 2,455.18, 3,387.80 and 1,570.34 is: 2,166.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.18 : 3,387.80 = 1,570.34 : x
  2. Step 2: Convert to fraction form
    2,455.18/3,387.80 = 1,570.34/x
  3. Step 3: Cross multiply
    2,455.18x = 3,387.80 × 1,570.34
  4. Step 4: Simplify right side
    2,455.18x = 5,319,997.85
  5. Step 5: Solve for x
    x = 5,319,997.85/2,455.18
  6. Step 6: Final answer
    x = 2,166.85

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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.