Home / 1,518.90-2,088.50-1,297.45

Finding the Fourth Proportional to 1,518.90, 2,088.50 and 1,297.45

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Solution

The fourth proportional to 1,518.90, 2,088.50 and 1,297.45 is: 1,784.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.90 : 2,088.50 = 1,297.45 : x
  2. Step 2: Convert to fraction form
    1,518.90/2,088.50 = 1,297.45/x
  3. Step 3: Cross multiply
    1,518.90x = 2,088.50 × 1,297.45
  4. Step 4: Simplify right side
    1,518.90x = 2,709,724.33
  5. Step 5: Solve for x
    x = 2,709,724.33/1,518.90
  6. Step 6: Final answer
    x = 1,784.00

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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.