Home / 1,657.18-2,284.36-1,391.50

Finding the Fourth Proportional to 1,657.18, 2,284.36 and 1,391.50

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Solution

The fourth proportional to 1,657.18, 2,284.36 and 1,391.50 is: 1,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.18 : 2,284.36 = 1,391.50 : x
  2. Step 2: Convert to fraction form
    1,657.18/2,284.36 = 1,391.50/x
  3. Step 3: Cross multiply
    1,657.18x = 2,284.36 × 1,391.50
  4. Step 4: Simplify right side
    1,657.18x = 3,178,686.94
  5. Step 5: Solve for x
    x = 3,178,686.94/1,657.18
  6. Step 6: Final answer
    x = 1,918.13

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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.