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Finding the Fourth Proportional to 1,865.07, 2,798.95 and 695.24

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Solution

The fourth proportional to 1,865.07, 2,798.95 and 695.24 is: 1,043.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.07 : 2,798.95 = 695.24 : x
  2. Step 2: Convert to fraction form
    1,865.07/2,798.95 = 695.24/x
  3. Step 3: Cross multiply
    1,865.07x = 2,798.95 × 695.24
  4. Step 4: Simplify right side
    1,865.07x = 1,945,947.26
  5. Step 5: Solve for x
    x = 1,945,947.26/1,865.07
  6. Step 6: Final answer
    x = 1,043.36

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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.