Home / 1,925.40-2,657.30-1,086.15

Finding the Fourth Proportional to 1,925.40, 2,657.30 and 1,086.15

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Solution

The fourth proportional to 1,925.40, 2,657.30 and 1,086.15 is: 1,499.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.40 : 2,657.30 = 1,086.15 : x
  2. Step 2: Convert to fraction form
    1,925.40/2,657.30 = 1,086.15/x
  3. Step 3: Cross multiply
    1,925.40x = 2,657.30 × 1,086.15
  4. Step 4: Simplify right side
    1,925.40x = 2,886,220.96
  5. Step 5: Solve for x
    x = 2,886,220.96/1,925.40
  6. Step 6: Final answer
    x = 1,499.02

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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.