Home / 1,528.96-2,281.78-1,490.08

Finding the Fourth Proportional to 1,528.96, 2,281.78 and 1,490.08

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Solution

The fourth proportional to 1,528.96, 2,281.78 and 1,490.08 is: 2,223.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.96 : 2,281.78 = 1,490.08 : x
  2. Step 2: Convert to fraction form
    1,528.96/2,281.78 = 1,490.08/x
  3. Step 3: Cross multiply
    1,528.96x = 2,281.78 × 1,490.08
  4. Step 4: Simplify right side
    1,528.96x = 3,400,034.74
  5. Step 5: Solve for x
    x = 3,400,034.74/1,528.96
  6. Step 6: Final answer
    x = 2,223.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.