Home / 1,657.48-2,287.56-985.66

Finding the Fourth Proportional to 1,657.48, 2,287.56 and 985.66

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Solution

The fourth proportional to 1,657.48, 2,287.56 and 985.66 is: 1,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.48 : 2,287.56 = 985.66 : x
  2. Step 2: Convert to fraction form
    1,657.48/2,287.56 = 985.66/x
  3. Step 3: Cross multiply
    1,657.48x = 2,287.56 × 985.66
  4. Step 4: Simplify right side
    1,657.48x = 2,254,756.39
  5. Step 5: Solve for x
    x = 2,254,756.39/1,657.48
  6. Step 6: Final answer
    x = 1,360.35

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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.