Home / 1,567.19-2,163.15-977.38

Finding the Fourth Proportional to 1,567.19, 2,163.15 and 977.38

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Solution

The fourth proportional to 1,567.19, 2,163.15 and 977.38 is: 1,349.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.19 : 2,163.15 = 977.38 : x
  2. Step 2: Convert to fraction form
    1,567.19/2,163.15 = 977.38/x
  3. Step 3: Cross multiply
    1,567.19x = 2,163.15 × 977.38
  4. Step 4: Simplify right side
    1,567.19x = 2,114,219.55
  5. Step 5: Solve for x
    x = 2,114,219.55/1,567.19
  6. Step 6: Final answer
    x = 1,349.05

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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.