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Finding the Fourth Proportional to 1,566.35, 2,161.58 and 903.19

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Solution

The fourth proportional to 1,566.35, 2,161.58 and 903.19 is: 1,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.35 : 2,161.58 = 903.19 : x
  2. Step 2: Convert to fraction form
    1,566.35/2,161.58 = 903.19/x
  3. Step 3: Cross multiply
    1,566.35x = 2,161.58 × 903.19
  4. Step 4: Simplify right side
    1,566.35x = 1,952,302.12
  5. Step 5: Solve for x
    x = 1,952,302.12/1,566.35
  6. Step 6: Final answer
    x = 1,246.40

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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.