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Finding the Fourth Proportional to 5,692.51, 7,851.81 and 4,945.17

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Solution

The fourth proportional to 5,692.51, 7,851.81 and 4,945.17 is: 6,820.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,692.51 : 7,851.81 = 4,945.17 : x
  2. Step 2: Convert to fraction form
    5,692.51/7,851.81 = 4,945.17/x
  3. Step 3: Cross multiply
    5,692.51x = 7,851.81 × 4,945.17
  4. Step 4: Simplify right side
    5,692.51x = 38,828,535.26
  5. Step 5: Solve for x
    x = 38,828,535.26/5,692.51
  6. Step 6: Final answer
    x = 6,820.99

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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.