Home / 1,559.18-2,151.65-851.01

Finding the Fourth Proportional to 1,559.18, 2,151.65 and 851.01

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Solution

The fourth proportional to 1,559.18, 2,151.65 and 851.01 is: 1,174.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.18 : 2,151.65 = 851.01 : x
  2. Step 2: Convert to fraction form
    1,559.18/2,151.65 = 851.01/x
  3. Step 3: Cross multiply
    1,559.18x = 2,151.65 × 851.01
  4. Step 4: Simplify right side
    1,559.18x = 1,831,064.91
  5. Step 5: Solve for x
    x = 1,831,064.91/1,559.18
  6. Step 6: Final answer
    x = 1,174.38

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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.