Home / 1,621.26-2,432.52-647.46

Finding the Fourth Proportional to 1,621.26, 2,432.52 and 647.46

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Solution

The fourth proportional to 1,621.26, 2,432.52 and 647.46 is: 971.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.26 : 2,432.52 = 647.46 : x
  2. Step 2: Convert to fraction form
    1,621.26/2,432.52 = 647.46/x
  3. Step 3: Cross multiply
    1,621.26x = 2,432.52 × 647.46
  4. Step 4: Simplify right side
    1,621.26x = 1,574,959.40
  5. Step 5: Solve for x
    x = 1,574,959.40/1,621.26
  6. Step 6: Final answer
    x = 971.44

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1.5x scale

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.