Home / 8,075.12-11,138.48-5,088.40

Finding the Fourth Proportional to 8,075.12, 11,138.48 and 5,088.40

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Solution

The fourth proportional to 8,075.12, 11,138.48 and 5,088.40 is: 7,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.12 : 11,138.48 = 5,088.40 : x
  2. Step 2: Convert to fraction form
    8,075.12/11,138.48 = 5,088.40/x
  3. Step 3: Cross multiply
    8,075.12x = 11,138.48 × 5,088.40
  4. Step 4: Simplify right side
    8,075.12x = 56,677,041.63
  5. Step 5: Solve for x
    x = 56,677,041.63/8,075.12
  6. Step 6: Final answer
    x = 7,018.72

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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.