Home / 2,485.90-3,430.62-1,366.92

Finding the Fourth Proportional to 2,485.90, 3,430.62 and 1,366.92

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Solution

The fourth proportional to 2,485.90, 3,430.62 and 1,366.92 is: 1,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.90 : 3,430.62 = 1,366.92 : x
  2. Step 2: Convert to fraction form
    2,485.90/3,430.62 = 1,366.92/x
  3. Step 3: Cross multiply
    2,485.90x = 3,430.62 × 1,366.92
  4. Step 4: Simplify right side
    2,485.90x = 4,689,373.44
  5. Step 5: Solve for x
    x = 4,689,373.44/2,485.90
  6. Step 6: Final answer
    x = 1,886.39

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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.