Home / 1,945.76-2,684.69-1,106.40

Finding the Fourth Proportional to 1,945.76, 2,684.69 and 1,106.40

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Solution

The fourth proportional to 1,945.76, 2,684.69 and 1,106.40 is: 1,526.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.76 : 2,684.69 = 1,106.40 : x
  2. Step 2: Convert to fraction form
    1,945.76/2,684.69 = 1,106.40/x
  3. Step 3: Cross multiply
    1,945.76x = 2,684.69 × 1,106.40
  4. Step 4: Simplify right side
    1,945.76x = 2,970,341.02
  5. Step 5: Solve for x
    x = 2,970,341.02/1,945.76
  6. Step 6: Final answer
    x = 1,526.57

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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.