Home / 2,075.40-2,860.65-1,681.74

Finding the Fourth Proportional to 2,075.40, 2,860.65 and 1,681.74

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Solution

The fourth proportional to 2,075.40, 2,860.65 and 1,681.74 is: 2,318.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.40 : 2,860.65 = 1,681.74 : x
  2. Step 2: Convert to fraction form
    2,075.40/2,860.65 = 1,681.74/x
  3. Step 3: Cross multiply
    2,075.40x = 2,860.65 × 1,681.74
  4. Step 4: Simplify right side
    2,075.40x = 4,810,869.53
  5. Step 5: Solve for x
    x = 4,810,869.53/2,075.40
  6. Step 6: Final answer
    x = 2,318.04

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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.