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Finding the Fourth Proportional to 1,890.32, 2,608.64 and 1,062.32

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Solution

The fourth proportional to 1,890.32, 2,608.64 and 1,062.32 is: 1,466.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.32 : 2,608.64 = 1,062.32 : x
  2. Step 2: Convert to fraction form
    1,890.32/2,608.64 = 1,062.32/x
  3. Step 3: Cross multiply
    1,890.32x = 2,608.64 × 1,062.32
  4. Step 4: Simplify right side
    1,890.32x = 2,771,210.44
  5. Step 5: Solve for x
    x = 2,771,210.44/1,890.32
  6. Step 6: Final answer
    x = 1,466.00

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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.