Home / 2,477.76-3,420-1,430.24

Finding the Fourth Proportional to 2,477.76, 3,420 and 1,430.24

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Solution

The fourth proportional to 2,477.76, 3,420 and 1,430.24 is: 1,974.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,477.76 : 3,420 = 1,430.24 : x
  2. Step 2: Convert to fraction form
    2,477.76/3,420 = 1,430.24/x
  3. Step 3: Cross multiply
    2,477.76x = 3,420 × 1,430.24
  4. Step 4: Simplify right side
    2,477.76x = 4,891,420.80
  5. Step 5: Solve for x
    x = 4,891,420.80/2,477.76
  6. Step 6: Final answer
    x = 1,974.13

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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.