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Finding the Fourth Proportional to 3,090, 4,264.20 and 1,692.76

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Solution

The fourth proportional to 3,090, 4,264.20 and 1,692.76 is: 2,336.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090 : 4,264.20 = 1,692.76 : x
  2. Step 2: Convert to fraction form
    3,090/4,264.20 = 1,692.76/x
  3. Step 3: Cross multiply
    3,090x = 4,264.20 × 1,692.76
  4. Step 4: Simplify right side
    3,090x = 7,218,267.19
  5. Step 5: Solve for x
    x = 7,218,267.19/3,090
  6. Step 6: Final answer
    x = 2,336.01

Related Problems

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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.