Home / 1,533.42-2,117.62-1,311.08

Finding the Fourth Proportional to 1,533.42, 2,117.62 and 1,311.08

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Solution

The fourth proportional to 1,533.42, 2,117.62 and 1,311.08 is: 1,810.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.42 : 2,117.62 = 1,311.08 : x
  2. Step 2: Convert to fraction form
    1,533.42/2,117.62 = 1,311.08/x
  3. Step 3: Cross multiply
    1,533.42x = 2,117.62 × 1,311.08
  4. Step 4: Simplify right side
    1,533.42x = 2,776,369.23
  5. Step 5: Solve for x
    x = 2,776,369.23/1,533.42
  6. Step 6: Final answer
    x = 1,810.57

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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.