Home / 1,445.66-2,158.73-1,430.40

Finding the Fourth Proportional to 1,445.66, 2,158.73 and 1,430.40

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Solution

The fourth proportional to 1,445.66, 2,158.73 and 1,430.40 is: 2,135.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.66 : 2,158.73 = 1,430.40 : x
  2. Step 2: Convert to fraction form
    1,445.66/2,158.73 = 1,430.40/x
  3. Step 3: Cross multiply
    1,445.66x = 2,158.73 × 1,430.40
  4. Step 4: Simplify right side
    1,445.66x = 3,087,847.39
  5. Step 5: Solve for x
    x = 3,087,847.39/1,445.66
  6. Step 6: Final answer
    x = 2,135.94

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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.