Home / 1,554.09-2,143.57-1,319.60

Finding the Fourth Proportional to 1,554.09, 2,143.57 and 1,319.60

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Solution

The fourth proportional to 1,554.09, 2,143.57 and 1,319.60 is: 1,820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.09 : 2,143.57 = 1,319.60 : x
  2. Step 2: Convert to fraction form
    1,554.09/2,143.57 = 1,319.60/x
  3. Step 3: Cross multiply
    1,554.09x = 2,143.57 × 1,319.60
  4. Step 4: Simplify right side
    1,554.09x = 2,828,654.97
  5. Step 5: Solve for x
    x = 2,828,654.97/1,554.09
  6. Step 6: Final answer
    x = 1,820.14

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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.