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Finding the Fourth Proportional to 1,680.96, 2,319.75 and 924.77

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Solution

The fourth proportional to 1,680.96, 2,319.75 and 924.77 is: 1,276.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.96 : 2,319.75 = 924.77 : x
  2. Step 2: Convert to fraction form
    1,680.96/2,319.75 = 924.77/x
  3. Step 3: Cross multiply
    1,680.96x = 2,319.75 × 924.77
  4. Step 4: Simplify right side
    1,680.96x = 2,145,218.98
  5. Step 5: Solve for x
    x = 2,145,218.98/1,680.96
  6. Step 6: Final answer
    x = 1,276.19

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1.5x scale

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.