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Finding the Fourth Proportional to 1,763.76, 2,646.12 and 723.24

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Solution

The fourth proportional to 1,763.76, 2,646.12 and 723.24 is: 1,085.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.76 : 2,646.12 = 723.24 : x
  2. Step 2: Convert to fraction form
    1,763.76/2,646.12 = 723.24/x
  3. Step 3: Cross multiply
    1,763.76x = 2,646.12 × 723.24
  4. Step 4: Simplify right side
    1,763.76x = 1,913,779.83
  5. Step 5: Solve for x
    x = 1,913,779.83/1,763.76
  6. Step 6: Final answer
    x = 1,085.06

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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.