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Finding the Fourth Proportional to 1,690.94, 2,333.43 and 973.07

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Solution

The fourth proportional to 1,690.94, 2,333.43 and 973.07 is: 1,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.94 : 2,333.43 = 973.07 : x
  2. Step 2: Convert to fraction form
    1,690.94/2,333.43 = 973.07/x
  3. Step 3: Cross multiply
    1,690.94x = 2,333.43 × 973.07
  4. Step 4: Simplify right side
    1,690.94x = 2,270,590.73
  5. Step 5: Solve for x
    x = 2,270,590.73/1,690.94
  6. Step 6: Final answer
    x = 1,342.80

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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.