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Finding the Fourth Proportional to 1,707.48, 2,356.56 and 1,009.80

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Solution

The fourth proportional to 1,707.48, 2,356.56 and 1,009.80 is: 1,393.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.48 : 2,356.56 = 1,009.80 : x
  2. Step 2: Convert to fraction form
    1,707.48/2,356.56 = 1,009.80/x
  3. Step 3: Cross multiply
    1,707.48x = 2,356.56 × 1,009.80
  4. Step 4: Simplify right side
    1,707.48x = 2,379,654.29
  5. Step 5: Solve for x
    x = 2,379,654.29/1,707.48
  6. Step 6: Final answer
    x = 1,393.66

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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.