Home / 1,586.54-2,190.00-1,291.30

Finding the Fourth Proportional to 1,586.54, 2,190.00 and 1,291.30

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Solution

The fourth proportional to 1,586.54, 2,190.00 and 1,291.30 is: 1,782.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.54 : 2,190.00 = 1,291.30 : x
  2. Step 2: Convert to fraction form
    1,586.54/2,190.00 = 1,291.30/x
  3. Step 3: Cross multiply
    1,586.54x = 2,190.00 × 1,291.30
  4. Step 4: Simplify right side
    1,586.54x = 2,827,946.37
  5. Step 5: Solve for x
    x = 2,827,946.37/1,586.54
  6. Step 6: Final answer
    x = 1,782.46

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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.