Home / 1,587.60-2,392.20-1,490.40

Finding the Fourth Proportional to 1,587.60, 2,392.20 and 1,490.40

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Solution

The fourth proportional to 1,587.60, 2,392.20 and 1,490.40 is: 2,245.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.60 : 2,392.20 = 1,490.40 : x
  2. Step 2: Convert to fraction form
    1,587.60/2,392.20 = 1,490.40/x
  3. Step 3: Cross multiply
    1,587.60x = 2,392.20 × 1,490.40
  4. Step 4: Simplify right side
    1,587.60x = 3,565,334.88
  5. Step 5: Solve for x
    x = 3,565,334.88/1,587.60
  6. Step 6: Final answer
    x = 2,245.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.