Home / 8,712.42-12,023.18-5,127.51

Finding the Fourth Proportional to 8,712.42, 12,023.18 and 5,127.51

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Solution

The fourth proportional to 8,712.42, 12,023.18 and 5,127.51 is: 7,075.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.42 : 12,023.18 = 5,127.51 : x
  2. Step 2: Convert to fraction form
    8,712.42/12,023.18 = 5,127.51/x
  3. Step 3: Cross multiply
    8,712.42x = 12,023.18 × 5,127.51
  4. Step 4: Simplify right side
    8,712.42x = 61,648,988.50
  5. Step 5: Solve for x
    x = 61,648,988.50/8,712.42
  6. Step 6: Final answer
    x = 7,075.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.