Home / 1,925.57-2,657.47-1,139.74

Finding the Fourth Proportional to 1,925.57, 2,657.47 and 1,139.74

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Solution

The fourth proportional to 1,925.57, 2,657.47 and 1,139.74 is: 1,572.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.57 : 2,657.47 = 1,139.74 : x
  2. Step 2: Convert to fraction form
    1,925.57/2,657.47 = 1,139.74/x
  3. Step 3: Cross multiply
    1,925.57x = 2,657.47 × 1,139.74
  4. Step 4: Simplify right side
    1,925.57x = 3,028,811.57
  5. Step 5: Solve for x
    x = 3,028,811.57/1,925.57
  6. Step 6: Final answer
    x = 1,572.94

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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.