Home / 1,430.02-2,139.09-1,342.54

Finding the Fourth Proportional to 1,430.02, 2,139.09 and 1,342.54

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Solution

The fourth proportional to 1,430.02, 2,139.09 and 1,342.54 is: 2,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.02 : 2,139.09 = 1,342.54 : x
  2. Step 2: Convert to fraction form
    1,430.02/2,139.09 = 1,342.54/x
  3. Step 3: Cross multiply
    1,430.02x = 2,139.09 × 1,342.54
  4. Step 4: Simplify right side
    1,430.02x = 2,871,813.89
  5. Step 5: Solve for x
    x = 2,871,813.89/1,430.02
  6. Step 6: Final answer
    x = 2,008.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.