Home / 1,690.32-2,333.16-1,567.20

Finding the Fourth Proportional to 1,690.32, 2,333.16 and 1,567.20

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Solution

The fourth proportional to 1,690.32, 2,333.16 and 1,567.20 is: 2,163.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.32 : 2,333.16 = 1,567.20 : x
  2. Step 2: Convert to fraction form
    1,690.32/2,333.16 = 1,567.20/x
  3. Step 3: Cross multiply
    1,690.32x = 2,333.16 × 1,567.20
  4. Step 4: Simplify right side
    1,690.32x = 3,656,528.35
  5. Step 5: Solve for x
    x = 3,656,528.35/1,690.32
  6. Step 6: Final answer
    x = 2,163.22

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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.