Home / 1,386.30-2,075.40-924.60

Finding the Fourth Proportional to 1,386.30, 2,075.40 and 924.60

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Solution

The fourth proportional to 1,386.30, 2,075.40 and 924.60 is: 1,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.30 : 2,075.40 = 924.60 : x
  2. Step 2: Convert to fraction form
    1,386.30/2,075.40 = 924.60/x
  3. Step 3: Cross multiply
    1,386.30x = 2,075.40 × 924.60
  4. Step 4: Simplify right side
    1,386.30x = 1,918,914.84
  5. Step 5: Solve for x
    x = 1,918,914.84/1,386.30
  6. Step 6: Final answer
    x = 1,384.20

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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.