Home / 1,635.42-2,254.70-1,320.32

Finding the Fourth Proportional to 1,635.42, 2,254.70 and 1,320.32

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Solution

The fourth proportional to 1,635.42, 2,254.70 and 1,320.32 is: 1,820.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.42 : 2,254.70 = 1,320.32 : x
  2. Step 2: Convert to fraction form
    1,635.42/2,254.70 = 1,320.32/x
  3. Step 3: Cross multiply
    1,635.42x = 2,254.70 × 1,320.32
  4. Step 4: Simplify right side
    1,635.42x = 2,976,925.50
  5. Step 5: Solve for x
    x = 2,976,925.50/1,635.42
  6. Step 6: Final answer
    x = 1,820.28

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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.