Home / 1,439.05-2,142.60-1,430.95

Finding the Fourth Proportional to 1,439.05, 2,142.60 and 1,430.95

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Solution

The fourth proportional to 1,439.05, 2,142.60 and 1,430.95 is: 2,130.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.05 : 2,142.60 = 1,430.95 : x
  2. Step 2: Convert to fraction form
    1,439.05/2,142.60 = 1,430.95/x
  3. Step 3: Cross multiply
    1,439.05x = 2,142.60 × 1,430.95
  4. Step 4: Simplify right side
    1,439.05x = 3,065,953.47
  5. Step 5: Solve for x
    x = 3,065,953.47/1,439.05
  6. Step 6: Final answer
    x = 2,130.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.