Home / 1,587.47-2,188.60-1,302.84

Finding the Fourth Proportional to 1,587.47, 2,188.60 and 1,302.84

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Solution

The fourth proportional to 1,587.47, 2,188.60 and 1,302.84 is: 1,796.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.47 : 2,188.60 = 1,302.84 : x
  2. Step 2: Convert to fraction form
    1,587.47/2,188.60 = 1,302.84/x
  3. Step 3: Cross multiply
    1,587.47x = 2,188.60 × 1,302.84
  4. Step 4: Simplify right side
    1,587.47x = 2,851,395.62
  5. Step 5: Solve for x
    x = 2,851,395.62/1,587.47
  6. Step 6: Final answer
    x = 1,796.19

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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.