Home / 1,420.10-2,132.79-846.50

Finding the Fourth Proportional to 1,420.10, 2,132.79 and 846.50

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Solution

The fourth proportional to 1,420.10, 2,132.79 and 846.50 is: 1,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.10 : 2,132.79 = 846.50 : x
  2. Step 2: Convert to fraction form
    1,420.10/2,132.79 = 846.50/x
  3. Step 3: Cross multiply
    1,420.10x = 2,132.79 × 846.50
  4. Step 4: Simplify right side
    1,420.10x = 1,805,406.74
  5. Step 5: Solve for x
    x = 1,805,406.74/1,420.10
  6. Step 6: Final answer
    x = 1,271.32

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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.