Home / 1,214.16-1,675.55-690.19

Finding the Fourth Proportional to 1,214.16, 1,675.55 and 690.19

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Solution

The fourth proportional to 1,214.16, 1,675.55 and 690.19 is: 952.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.16 : 1,675.55 = 690.19 : x
  2. Step 2: Convert to fraction form
    1,214.16/1,675.55 = 690.19/x
  3. Step 3: Cross multiply
    1,214.16x = 1,675.55 × 690.19
  4. Step 4: Simplify right side
    1,214.16x = 1,156,445.39
  5. Step 5: Solve for x
    x = 1,156,445.39/1,214.16
  6. Step 6: Final answer
    x = 952.47

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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.