Home / 1,692.07-2,330.93-1,407.28

Finding the Fourth Proportional to 1,692.07, 2,330.93 and 1,407.28

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Solution

The fourth proportional to 1,692.07, 2,330.93 and 1,407.28 is: 1,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.07 : 2,330.93 = 1,407.28 : x
  2. Step 2: Convert to fraction form
    1,692.07/2,330.93 = 1,407.28/x
  3. Step 3: Cross multiply
    1,692.07x = 2,330.93 × 1,407.28
  4. Step 4: Simplify right side
    1,692.07x = 3,280,271.17
  5. Step 5: Solve for x
    x = 3,280,271.17/1,692.07
  6. Step 6: Final answer
    x = 1,938.61

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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.