Home / 1,590.95-2,197.56-1,222.46

Finding the Fourth Proportional to 1,590.95, 2,197.56 and 1,222.46

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Solution

The fourth proportional to 1,590.95, 2,197.56 and 1,222.46 is: 1,688.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.95 : 2,197.56 = 1,222.46 : x
  2. Step 2: Convert to fraction form
    1,590.95/2,197.56 = 1,222.46/x
  3. Step 3: Cross multiply
    1,590.95x = 2,197.56 × 1,222.46
  4. Step 4: Simplify right side
    1,590.95x = 2,686,429.20
  5. Step 5: Solve for x
    x = 2,686,429.20/1,590.95
  6. Step 6: Final answer
    x = 1,688.57

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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.