Home / 1,657.10-2,485.65-1,268.30

Finding the Fourth Proportional to 1,657.10, 2,485.65 and 1,268.30

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Solution

The fourth proportional to 1,657.10, 2,485.65 and 1,268.30 is: 1,902.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.10 : 2,485.65 = 1,268.30 : x
  2. Step 2: Convert to fraction form
    1,657.10/2,485.65 = 1,268.30/x
  3. Step 3: Cross multiply
    1,657.10x = 2,485.65 × 1,268.30
  4. Step 4: Simplify right side
    1,657.10x = 3,152,549.90
  5. Step 5: Solve for x
    x = 3,152,549.90/1,657.10
  6. Step 6: Final answer
    x = 1,902.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.