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Finding the Fourth Proportional to 4,874.55, 7,312.95 and 1,587.63

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Solution

The fourth proportional to 4,874.55, 7,312.95 and 1,587.63 is: 2,381.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,874.55 : 7,312.95 = 1,587.63 : x
  2. Step 2: Convert to fraction form
    4,874.55/7,312.95 = 1,587.63/x
  3. Step 3: Cross multiply
    4,874.55x = 7,312.95 × 1,587.63
  4. Step 4: Simplify right side
    4,874.55x = 11,610,258.81
  5. Step 5: Solve for x
    x = 11,610,258.81/4,874.55
  6. Step 6: Final answer
    x = 2,381.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.