Home / 1,953.62-2,695.45-1,290.26

Finding the Fourth Proportional to 1,953.62, 2,695.45 and 1,290.26

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Solution

The fourth proportional to 1,953.62, 2,695.45 and 1,290.26 is: 1,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.62 : 2,695.45 = 1,290.26 : x
  2. Step 2: Convert to fraction form
    1,953.62/2,695.45 = 1,290.26/x
  3. Step 3: Cross multiply
    1,953.62x = 2,695.45 × 1,290.26
  4. Step 4: Simplify right side
    1,953.62x = 3,477,831.32
  5. Step 5: Solve for x
    x = 3,477,831.32/1,953.62
  6. Step 6: Final answer
    x = 1,780.20

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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.