Home / 1,665.45-2,292.95-1,370.21

Finding the Fourth Proportional to 1,665.45, 2,292.95 and 1,370.21

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Solution

The fourth proportional to 1,665.45, 2,292.95 and 1,370.21 is: 1,886.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.45 : 2,292.95 = 1,370.21 : x
  2. Step 2: Convert to fraction form
    1,665.45/2,292.95 = 1,370.21/x
  3. Step 3: Cross multiply
    1,665.45x = 2,292.95 × 1,370.21
  4. Step 4: Simplify right side
    1,665.45x = 3,141,804.70
  5. Step 5: Solve for x
    x = 3,141,804.70/1,665.45
  6. Step 6: Final answer
    x = 1,886.46

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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.