Home / 1,530.72-2,285.70-1,202.40

Finding the Fourth Proportional to 1,530.72, 2,285.70 and 1,202.40

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Solution

The fourth proportional to 1,530.72, 2,285.70 and 1,202.40 is: 1,795.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.72 : 2,285.70 = 1,202.40 : x
  2. Step 2: Convert to fraction form
    1,530.72/2,285.70 = 1,202.40/x
  3. Step 3: Cross multiply
    1,530.72x = 2,285.70 × 1,202.40
  4. Step 4: Simplify right side
    1,530.72x = 2,748,325.68
  5. Step 5: Solve for x
    x = 2,748,325.68/1,530.72
  6. Step 6: Final answer
    x = 1,795.45

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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.